78650858580 has 48 divisors (see below), whose sum is σ = 251682748800. Its totient is φ = 17977339008.

The previous prime is 78650858551. The next prime is 78650858647. The reversal of 78650858580 is 8585805687.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93631555 + ... + 93632394.

It is an arithmetic number, because the mean of its divisors is an integer number (5243390600).

Almost surely, 2^78650858580 is an apocalyptic number.

78650858580 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78650858580 is an abundant number, since it is smaller than the sum of its proper divisors (173031890220).

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

78650858580 is a wasteful number, since it uses less digits than its factorization.

78650858580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187263968 (or 187263966 counting only the distinct ones).

The product of its (nonzero) digits is 21504000, while the sum is 60.

The spelling of 78650858580 in words is "seventy-eight billion, six hundred fifty million, eight hundred fifty-eight thousand, five hundred eighty".