79612128900 has 108 divisors (see below), whose sum is σ = 252010773924. Its totient is φ = 21019680000.

The previous prime is 79612128863. The next prime is 79612128913. The reversal of 79612128900 is 982121697.

79612128900 is a `hidden beast` number, since 7 + 9 + 612 + 1 + 28 + 9 + 0 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1998626436 + 77613502464 = 44706^2 + 278592^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 347011 + ... + 528810.

Almost surely, 2^79612128900 is an apocalyptic number.

It is an amenable number.

79612128900 is an abundant number, since it is smaller than the sum of its proper divisors (172398645024).

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

79612128900 is a wasteful number, since it uses less digits than its factorization.

79612128900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875942 (or 875932 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 79612128900 in words is "seventy-nine billion, six hundred twelve million, one hundred twenty-eight thousand, nine hundred".