78120792510 has 48 divisors (see below), whose sum is σ = 188849855376. Its totient is φ = 20682185856.

The previous prime is 78120792481. The next prime is 78120792551. The reversal of 78120792510 is 1529702187.

It is a super-2 number, since 2×78120792510² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 512242 + ... + 647018.

It is an arithmetic number, because the mean of its divisors is an integer number (3934371987).

Almost surely, 2^78120792510 is an apocalyptic number.

78120792510 is an abundant number, since it is smaller than the sum of its proper divisors (110729062866).

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

78120792510 is a wasteful number, since it uses less digits than its factorization.

78120792510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135065 (or 134926 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 42.

The spelling of 78120792510 in words is "seventy-eight billion, one hundred twenty million, seven hundred ninety-two thousand, five hundred ten".