78578057367 has 32 divisors (see below), whose sum is σ = 118932710400. Its totient is φ = 51251848704.

The previous prime is 78578057359. The next prime is 78578057387. The reversal of 78578057367 is 76375087587.

78578057367 is a `hidden beast` number, since 7 + 8 + 57 + 8 + 0 + 573 + 6 + 7 = 666.

It is not a de Polignac number, because 78578057367 - 2³ = 78578057359 is a prime.

It is a super-2 number, since 2×78578057367² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78578057387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3970984 + ... + 3990722.

It is an arithmetic number, because the mean of its divisors is an integer number (3716647200).

Almost surely, 2^78578057367 is an apocalyptic number.

78578057367 is a deficient number, since it is larger than the sum of its proper divisors (40354653033).

78578057367 is a wasteful number, since it uses less digits than its factorization.

78578057367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22932 (or 22926 counting only the distinct ones).

The product of its (nonzero) digits is 69148800, while the sum is 63.

The spelling of 78578057367 in words is "seventy-eight billion, five hundred seventy-eight million, fifty-seven thousand, three hundred sixty-seven".