78075687680 has 72 divisors (see below), whose sum is σ = 196858662000. Its totient is φ = 29586567168.

The previous prime is 78075687659. The next prime is 78075687713. The reversal of 78075687680 is 8678657087.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1580855 + ... + 1629494.

Almost surely, 2^78075687680 is an apocalyptic number.

It is an amenable number.

78075687680 is an abundant number, since it is smaller than the sum of its proper divisors (118782974320).

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

78075687680 is a wasteful number, since it uses less digits than its factorization.

78075687680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210389 (or 3210375 counting only the distinct ones).

The product of its (nonzero) digits is 31610880, while the sum is 62.

The spelling of 78075687680 in words is "seventy-eight billion, seventy-five million, six hundred eighty-seven thousand, six hundred eighty".