78795506520 has 96 divisors (see below), whose sum is σ = 262040922000. Its totient is φ = 20523476736.

The previous prime is 78795506513. The next prime is 78795506539. The reversal of 78795506520 is 2560559787.

78795506520 is a `hidden beast` number, since 7 + 8 + 7 + 9 + 550 + 65 + 20 = 666.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 2529595 + ... + 2560554.

Almost surely, 2^78795506520 is an apocalyptic number.

It is an amenable number.

78795506520 is an abundant number, since it is smaller than the sum of its proper divisors (183245415480).

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

78795506520 is a wasteful number, since it uses less digits than its factorization.

78795506520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5090209 (or 5090202 counting only the distinct ones).

The product of its (nonzero) digits is 5292000, while the sum is 54.

The spelling of 78795506520 in words is "seventy-eight billion, seven hundred ninety-five million, five hundred six thousand, five hundred twenty".