78072944994 has 24 divisors (see below), whose sum is σ = 184536052272. Its totient is φ = 23658468120.

The previous prime is 78072944947. The next prime is 78072945061. The reversal of 78072944994 is 49944927087.

78072944994 is a `hidden beast` number, since 7 + 80 + 7 + 29 + 449 + 94 = 666.

It is a super-2 number, since 2×78072944994² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197153704 + ... + 197154099.

It is an arithmetic number, because the mean of its divisors is an integer number (7689002178).

Almost surely, 2^78072944994 is an apocalyptic number.

78072944994 is an abundant number, since it is smaller than the sum of its proper divisors (106463107278).

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

78072944994 is a wasteful number, since it uses less digits than its factorization.

78072944994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394307822 (or 394307819 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 78072944994 in words is "seventy-eight billion, seventy-two million, nine hundred forty-four thousand, nine hundred ninety-four".