78576205620 has 96 divisors (see below), whose sum is σ = 245868690816. Its totient is φ = 18584166400.

The previous prime is 78576205583. The next prime is 78576205639. The reversal of 78576205620 is 2650267587.

It is a self number, because there is not a number n which added to its sum of digits gives 78576205620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1424829 + ... + 1478948.

It is an arithmetic number, because the mean of its divisors is an integer number (2561132196).

Almost surely, 2^78576205620 is an apocalyptic number.

It is an amenable number.

78576205620 is an abundant number, since it is smaller than the sum of its proper divisors (167292485196).

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

78576205620 is a wasteful number, since it uses less digits than its factorization.

78576205620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2903841 (or 2903839 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 78576205620 in words is "seventy-eight billion, five hundred seventy-six million, two hundred five thousand, six hundred twenty".