78888599588886 has 16 divisors (see below), whose sum is σ = 157777486003200. Its totient is φ = 26296152058728.

The previous prime is 78888599588849. The next prime is 78888599588893. The reversal of 78888599588886 is 68888599588887.

It is a super-2 number, since 2×78888599588886² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 8289226 + ... + 15049533.

It is an arithmetic number, because the mean of its divisors is an integer number (9861092875200).

Almost surely, 2^{78888599588886} is an apocalyptic number.

78888599588886 is an abundant number, since it is smaller than the sum of its proper divisors (78888886414314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78888599588886 is a wasteful number, since it uses less digits than its factorization.

78888599588886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23902123.

The product of its digits is 1426902220800, while the sum is 105.

Subtracting from 78888599588886 its reverse (68888599588887), we obtain a palindrome (9999999999999).

The spelling of 78888599588886 in words is "seventy-eight trillion, eight hundred eighty-eight billion, five hundred ninety-nine million, five hundred eighty-eight thousand, eight hundred eighty-six".