78675113578 has 16 divisors (see below), whose sum is σ = 118437207336. Its totient is φ = 39196094400.

The previous prime is 78675113567. The next prime is 78675113669. The reversal of 78675113578 is 87531157687.

It can be written as a sum of positive squares in 4 ways, for example, as 69039139009 + 9635974569 = 262753^2 + 98163^2 .

It is a super-2 number, since 2×78675113578² (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 7 ways as a sum of consecutive naturals, for example, 4738900 + ... + 4755472.

Almost surely, 2^78675113578 is an apocalyptic number.

78675113578 is a deficient number, since it is larger than the sum of its proper divisors (39762093758).

78675113578 is a wasteful number, since it uses less digits than its factorization.

78675113578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24969.

The product of its digits is 9878400, while the sum is 58.

The spelling of 78675113578 in words is "seventy-eight billion, six hundred seventy-five million, one hundred thirteen thousand, five hundred seventy-eight".