79812559071 has 48 divisors (see below), whose sum is σ = 133925668864. Its totient is φ = 44858904192.

The previous prime is 79812559063. The next prime is 79812559097. The reversal of 79812559071 is 17095521897.

79812559071 is a `hidden beast` number, since 7 + 9 + 8 + 12 + 559 + 0 + 71 = 666.

It is not a de Polignac number, because 79812559071 - 2³ = 79812559063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79812558999 and 79812559017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79812559471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1664190 + ... + 1711476.

Almost surely, 2^79812559071 is an apocalyptic number.

79812559071 is a deficient number, since it is larger than the sum of its proper divisors (54113109793).

79812559071 is a wasteful number, since it uses less digits than its factorization.

79812559071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47740 (or 47737 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 54.

The spelling of 79812559071 in words is "seventy-nine billion, eight hundred twelve million, five hundred fifty-nine thousand, seventy-one".