78972558335 has 16 divisors (see below), whose sum is σ = 103554892800. Its totient is φ = 57338679840.

The previous prime is 78972558317. The next prime is 78972558361. The reversal of 78972558335 is 53385527987.

It is a happy number.

It is not a de Polignac number, because 78972558335 - 2²² = 78968364031 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1165607 + ... + 1231496.

It is an arithmetic number, because the mean of its divisors is an integer number (6472180800).

Almost surely, 2^78972558335 is an apocalyptic number.

78972558335 is a deficient number, since it is larger than the sum of its proper divisors (24582334465).

78972558335 is a wasteful number, since it uses less digits than its factorization.

78972558335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397718.

The product of its digits is 63504000, while the sum is 62.

The spelling of 78972558335 in words is "seventy-eight billion, nine hundred seventy-two million, five hundred fifty-eight thousand, three hundred thirty-five".