78167594040 has 64 divisors (see below), whose sum is σ = 236779545600. Its totient is φ = 20642312832.

The previous prime is 78167594009. The next prime is 78167594069. The reversal of 78167594040 is 4049576187.

It is a super-2 number, since 2×78167594040² (a number of 23 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 15 ways as a sum of consecutive naturals, for example, 3149760 + ... + 3174479.

It is an arithmetic number, because the mean of its divisors is an integer number (3699680400).

Almost surely, 2^78167594040 is an apocalyptic number.

It is an amenable number.

78167594040 is an abundant number, since it is smaller than the sum of its proper divisors (158611951560).

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

78167594040 is a wasteful number, since it uses less digits than its factorization.

78167594040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6324356 (or 6324352 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 78167594040 in words is "seventy-eight billion, one hundred sixty-seven million, five hundred ninety-four thousand, forty".