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115131287552740 = 22573280681280949
BaseRepresentation
bin11010001011011000010111…
…011111110100001011100100
3120002122102222101100121110121
4122023120113133310023210
5110042302334103141430
61044510330000131324
733151650430205314
oct3213302737641344
9502572871317417
10115131287552740
11337589a53a2258
1210ab526b306b44
134c31aabc07774
142060553b93444
15d49c67d29a7a
hex68b6177f42e4

115131287552740 has 48 divisors (see below), whose sum is σ = 245089445353200. Its totient is φ = 45421335152640.

The previous prime is 115131287552719. The next prime is 115131287552761. The reversal of 115131287552740 is 47255782131511.

It is an interprime number because it is at equal distance from previous prime (115131287552719) and next prime (115131287552761).

It can be written as a sum of positive squares in 8 ways, for example, as 71168367076 + 115060119185664 = 266774^2 + 10726608^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409653786 + ... + 409934734.

It is an arithmetic number, because the mean of its divisors is an integer number (5106030111525).

Almost surely, 2115131287552740 is an apocalyptic number.

115131287552740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115131287552740 is an abundant number, since it is smaller than the sum of its proper divisors (129958157800460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115131287552740 is a wasteful number, since it uses less digits than its factorization.

115131287552740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561712 (or 561710 counting only the distinct ones).

The product of its (nonzero) digits is 2352000, while the sum is 52.

The spelling of 115131287552740 in words is "one hundred fifteen trillion, one hundred thirty-one billion, two hundred eighty-seven million, five hundred fifty-two thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 73 146 292 365 730 1460 280681 280949 561362 561898 1122724 1123796 1403405 1404745 2806810 2809490 5613620 5618980 20489713 20509277 40979426 41018554 81958852 82037108 102448565 102546385 204897130 205092770 409794260 410185540 78857046269 157714092538 315428185076 394285231345 788570462690 1577140925380 5756564377637 11513128755274 23026257510548 28782821888185 57565643776370 115131287552740