78639303675 has 12 divisors (see below), whose sum is σ = 130016982200. Its totient is φ = 41940961920.

The previous prime is 78639303649. The next prime is 78639303679. The reversal of 78639303675 is 57630393687.

It is a happy number.

It is not a de Polignac number, because 78639303675 - 2²⁰ = 78638255099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78639303679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 524261950 + ... + 524262099.

Almost surely, 2^78639303675 is an apocalyptic number.

78639303675 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

78639303675 is a deficient number, since it is larger than the sum of its proper divisors (51377678525).

78639303675 is a wasteful number, since it uses less digits than its factorization.

78639303675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048524062 (or 1048524057 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 57.

The spelling of 78639303675 in words is "seventy-eight billion, six hundred thirty-nine million, three hundred three thousand, six hundred seventy-five".