78317500472522 has 16 divisors (see below), whose sum is σ = 118562384253600. Its totient is φ = 38797853248560.

The previous prime is 78317500472479. The next prime is 78317500472581. The reversal of 78317500472522 is 22527400571387.

It is a super-2 number, since 2×78317500472522² (a number of 29 digits) contains 22 as substring.

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, 286744997 + ... + 287017992.

It is an arithmetic number, because the mean of its divisors is an integer number (7410149015850).

Almost surely, 2^{78317500472522} is an apocalyptic number.

78317500472522 is a deficient number, since it is larger than the sum of its proper divisors (40244883781078).

78317500472522 is a wasteful number, since it uses less digits than its factorization.

78317500472522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573763621.

The product of its (nonzero) digits is 6585600, while the sum is 53.

The spelling of 78317500472522 in words is "seventy-eight trillion, three hundred seventeen billion, five hundred million, four hundred seventy-two thousand, five hundred twenty-two".