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12791725290 = 2325142130281
BaseRepresentation
bin10111110100111001…
…00011110011101010
31020000110212222021100
423322130203303222
5202144140202130
65513151022230
7631663604511
oct137234436352
936013788240
1012791725290
1154746605a3
12258bb0a976
13128b1ab226
14894c31678
154ed010c60
hex2fa723cea

12791725290 has 24 divisors (see below), whose sum is σ = 33258485988. Its totient is φ = 3411126720.

The previous prime is 12791725283. The next prime is 12791725301. The reversal of 12791725290 is 9252719721.

It can be written as a sum of positive squares in 2 ways, for example, as 12790931409 + 793881 = 113097^2 + 891^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71065051 + ... + 71065230.

Almost surely, 212791725290 is an apocalyptic number.

12791725290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12791725290 is an abundant number, since it is smaller than the sum of its proper divisors (20466760698).

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

12791725290 is a wasteful number, since it uses less digits than its factorization.

12791725290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142130294 (or 142130291 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The spelling of 12791725290 in words is "twelve billion, seven hundred ninety-one million, seven hundred twenty-five thousand, two hundred ninety".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 142130281 284260562 426390843 710651405 852781686 1279172529 1421302810 2131954215 2558345058 4263908430 6395862645 12791725290