78372894680 has 48 divisors (see below), whose sum is σ = 184339320480. Its totient is φ = 29986142912.

The previous prime is 78372894679. The next prime is 78372894713. The reversal of 78372894680 is 8649827387.

It is a super-2 number, since 2×78372894680² (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 11 ways as a sum of consecutive naturals, for example, 1830752 + ... + 1873071.

It is an arithmetic number, because the mean of its divisors is an integer number (3840402510).

Almost surely, 2^78372894680 is an apocalyptic number.

It is an amenable number.

78372894680 is an abundant number, since it is smaller than the sum of its proper divisors (105966425800).

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

78372894680 is a wasteful number, since it uses less digits than its factorization.

78372894680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703880 (or 3703853 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 62.

The spelling of 78372894680 in words is "seventy-eight billion, three hundred seventy-two million, eight hundred ninety-four thousand, six hundred eighty".