79556519430873 has 20 divisors (see below), whose sum is σ = 122941747783140. Its totient is φ = 51208794114912.

The previous prime is 79556519430809. The next prime is 79556519430877. The reversal of 79556519430873 is 37803491565597.

79556519430873 is a `hidden beast` number, since 7 + 9 + 5 + 5 + 6 + 519 + 4 + 30 + 8 + 73 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15169568304969 + 64386951125904 = 3894813^2 + 8024148^2 .

It is not a de Polignac number, because 79556519430873 - 2⁶ = 79556519430809 is a prime.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (79556519430877) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16934122690 + ... + 16934127387.

It is an arithmetic number, because the mean of its divisors is an integer number (6147087389157).

Almost surely, 2^{79556519430873} is an apocalyptic number.

It is an amenable number.

79556519430873 is a deficient number, since it is larger than the sum of its proper divisors (43385228352267).

79556519430873 is a wasteful number, since it uses less digits than its factorization.

79556519430873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33868250118 (or 33868250109 counting only the distinct ones).

The product of its (nonzero) digits is 857304000, while the sum is 72.

The spelling of 79556519430873 in words is "seventy-nine trillion, five hundred fifty-six billion, five hundred nineteen million, four hundred thirty thousand, eight hundred seventy-three".