78290924022 has 24 divisors (see below), whose sum is σ = 171186581280. Its totient is φ = 25857552240.

The previous prime is 78290923999. The next prime is 78290924039. The reversal of 78290924022 is 22042909287.

78290924022 is a `hidden beast` number, since 78 + 2 + 90 + 92 + 402 + 2 = 666.

It is a super-2 number, since 2×78290924022² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19949854 + ... + 19953777.

It is an arithmetic number, because the mean of its divisors is an integer number (7132774220).

Almost surely, 2^78290924022 is an apocalyptic number.

78290924022 is an abundant number, since it is smaller than the sum of its proper divisors (92895657258).

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

78290924022 is a wasteful number, since it uses less digits than its factorization.

78290924022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39903748 (or 39903745 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 78290924022 in words is "seventy-eight billion, two hundred ninety million, nine hundred twenty-four thousand, twenty-two".