78887869660 has 48 divisors (see below), whose sum is σ = 178439184000. Its totient is φ = 29199127104.

The previous prime is 78887869639. The next prime is 78887869699. The reversal of 78887869660 is 6696878887.

It is a Smith number, since the sum of its digits (73) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2397610 + ... + 2430289.

It is an arithmetic number, because the mean of its divisors is an integer number (3717483000).

Almost surely, 2^78887869660 is an apocalyptic number.

It is an amenable number.

78887869660 is an abundant number, since it is smaller than the sum of its proper divisors (99551314340).

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

78887869660 is a wasteful number, since it uses less digits than its factorization.

78887869660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4827970 (or 4827968 counting only the distinct ones).

The product of its (nonzero) digits is 390168576, while the sum is 73.

The spelling of 78887869660 in words is "seventy-eight billion, eight hundred eighty-seven million, eight hundred sixty-nine thousand, six hundred sixty".