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12501664260 = 2235239059177
BaseRepresentation
bin10111010010010100…
…00100001000000100
31012021021002100100020
423221022010020010
5201100411224020
65424310015140
7621542251521
oct135112041004
935237070306
1012501664260
115335955438
12250a9474b0
131243080297
148684c8148
154d2816c40
hex2e9284204

12501664260 has 48 divisors (see below), whose sum is σ = 36526605696. Its totient is φ = 3188829952.

The previous prime is 12501664249. The next prime is 12501664277. The reversal of 12501664260 is 6246610521.

It is a super-2 number, since 2×125016642602 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4528209 + ... + 4530968.

It is an arithmetic number, because the mean of its divisors is an integer number (760970952).

Almost surely, 212501664260 is an apocalyptic number.

12501664260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12501664260 is an abundant number, since it is smaller than the sum of its proper divisors (24024941436).

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

12501664260 is a wasteful number, since it uses less digits than its factorization.

12501664260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9059212 (or 9059210 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 12501664260 in words is "twelve billion, five hundred one million, six hundred sixty-four thousand, two hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 23 30 46 60 69 92 115 138 230 276 345 460 690 1380 9059177 18118354 27177531 36236708 45295885 54355062 90591770 108710124 135887655 181183540 208361071 271775310 416722142 543550620 625083213 833444284 1041805355 1250166426 2083610710 2500332852 3125416065 4167221420 6250832130 12501664260