78358269875 has 16 divisors (see below), whose sum is σ = 100945678080. Its totient is φ = 60664464000.

The previous prime is 78358269863. The next prime is 78358269883. The reversal of 78358269875 is 57896285387.

It is a de Polignac number, because none of the positive numbers 2^k-78358269875 is a prime.

It is a super-2 number, since 2×78358269875² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10106870 + ... + 10114619.

It is an arithmetic number, because the mean of its divisors is an integer number (6309104880).

Almost surely, 2^78358269875 is an apocalyptic number.

78358269875 is a deficient number, since it is larger than the sum of its proper divisors (22587408205).

78358269875 is a wasteful number, since it uses less digits than its factorization.

78358269875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20221535 (or 20221525 counting only the distinct ones).

The product of its digits is 203212800, while the sum is 68.

The spelling of 78358269875 in words is "seventy-eight billion, three hundred fifty-eight million, two hundred sixty-nine thousand, eight hundred seventy-five".