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13030154131520 = 26540719231661
BaseRepresentation
bin1011110110011101000110…
…1101010101100001000000
31201010200002211211010100102
42331213101231111201000
53201441223424202040
643413545320141532
72513253236445311
oct275472155254100
951120084733312
1013030154131520
11417406a348049
1215653b83078a8
13736979c67aa6
1433093cb12608
15178e26aa9515
hexbd9d1b55840

13030154131520 has 28 divisors (see below), whose sum is σ = 31028054526444. Its totient is φ = 5212061652480.

The previous prime is 13030154131459. The next prime is 13030154131529. The reversal of 13030154131520 is 2513145103031.

It can be written as a sum of positive squares in 2 ways, for example, as 5389529399296 + 7640624732224 = 2321536^2 + 2764168^2 .

It is not an unprimeable number, because it can be changed into a prime (13030154131529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20359615511 + ... + 20359616150.

Almost surely, 213030154131520 is an apocalyptic number.

13030154131520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13030154131520 is an abundant number, since it is smaller than the sum of its proper divisors (17997900394924).

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

13030154131520 is an equidigital number, since it uses as much as digits as its factorization.

13030154131520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40719231678 (or 40719231668 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 13030154131520 its reverse (2513145103031), we get a palindrome (15543299234551).

The spelling of 13030154131520 in words is "thirteen trillion, thirty billion, one hundred fifty-four million, one hundred thirty-one thousand, five hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 320 40719231661 81438463322 162876926644 203596158305 325753853288 407192316610 651507706576 814384633220 1303015413152 1628769266440 2606030826304 3257538532880 6515077065760 13030154131520