79563855504 has 80 divisors (see below), whose sum is σ = 242480353280. Its totient is φ = 21999219840.

The previous prime is 79563855499. The next prime is 79563855509. The reversal of 79563855504 is 40555836597.

It is an interprime number because it is at equal distance from previous prime (79563855499) and next prime (79563855509).

It is a super-2 number, since 2×79563855504² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79563855509) 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, 3808894 + ... + 3829725.

It is an arithmetic number, because the mean of its divisors is an integer number (3031004416).

Almost surely, 2^79563855504 is an apocalyptic number.

It is an amenable number.

79563855504 is an abundant number, since it is smaller than the sum of its proper divisors (162916497776).

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

79563855504 is a wasteful number, since it uses less digits than its factorization.

79563855504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7638668 (or 7638662 counting only the distinct ones).

The product of its (nonzero) digits is 22680000, while the sum is 57.

The spelling of 79563855504 in words is "seventy-nine billion, five hundred sixty-three million, eight hundred fifty-five thousand, five hundred four".