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12791875620 = 22351559136753
BaseRepresentation
bin10111110100111010…
…01000100000100100
31020000111011121111010
423322131020200210
5202144210004440
65513154142220
7631665102006
oct137235104044
936014147433
1012791875620
115474753537
12258bb81970
13128b231794
14894c70376
154ed040580
hex2fa748824

12791875620 has 48 divisors (see below), whose sum is σ = 35840488320. Its totient is φ = 3408953856.

The previous prime is 12791875561. The next prime is 12791875627. The reversal of 12791875620 is 2657819721.

It is a self number, because there is not a number n which added to its sum of digits gives 12791875620.

It is not an unprimeable number, because it can be changed into a prime (12791875627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25164 + ... + 161916.

It is an arithmetic number, because the mean of its divisors is an integer number (746676840).

Almost surely, 212791875620 is an apocalyptic number.

12791875620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12791875620 is an abundant number, since it is smaller than the sum of its proper divisors (23048612700).

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

12791875620 is a wasteful number, since it uses less digits than its factorization.

12791875620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138324 (or 138322 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 12791875620 in words is "twelve billion, seven hundred ninety-one million, eight hundred seventy-five thousand, six hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 1559 3118 4677 6236 7795 9354 15590 18708 23385 31180 46770 93540 136753 273506 410259 547012 683765 820518 1367530 1641036 2051295 2735060 4102590 8205180 213197927 426395854 639593781 852791708 1065989635 1279187562 2131979270 2558375124 3197968905 4263958540 6395937810 12791875620