78075687678 has 16 divisors (see below), whose sum is σ = 156157401360. Its totient is φ = 26024224896.

The previous prime is 78075687659. The next prime is 78075687713. The reversal of 78075687678 is 87678657087.

It is a congruent number.

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, 72925 + ... + 401832.

It is an arithmetic number, because the mean of its divisors is an integer number (9759837585).

Almost surely, 2^78075687678 is an apocalyptic number.

78075687678 is an abundant number, since it is smaller than the sum of its proper divisors (78081713682).

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

78075687678 is a wasteful number, since it uses less digits than its factorization.

78075687678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502171.

The product of its (nonzero) digits is 221276160, while the sum is 69.

The spelling of 78075687678 in words is "seventy-eight billion, seventy-five million, six hundred eighty-seven thousand, six hundred seventy-eight".