78518446914 has 24 divisors (see below), whose sum is σ = 164161447632. Its totient is φ = 25034866120.

The previous prime is 78518446913. The next prime is 78518446921. The reversal of 78518446914 is 41964481587.

It is a super-2 number, since 2×78518446914² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78518446913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12365832 + ... + 12372179.

It is an arithmetic number, because the mean of its divisors is an integer number (6840060318).

Almost surely, 2^78518446914 is an apocalyptic number.

78518446914 is an abundant number, since it is smaller than the sum of its proper divisors (85643000718).

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

78518446914 is a wasteful number, since it uses less digits than its factorization.

78518446914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24738062 (or 24738039 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 57.

The spelling of 78518446914 in words is "seventy-eight billion, five hundred eighteen million, four hundred forty-six thousand, nine hundred fourteen".