78379775022 has 8 divisors (see below), whose sum is σ = 156759550056. Its totient is φ = 26126591672.

The previous prime is 78379774997. The next prime is 78379775039. The reversal of 78379775022 is 22057797387.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

78379775022 is an admirable number.

It is a super-2 number, since 2×78379775022² (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 3 ways as a sum of consecutive naturals, for example, 6531647913 + ... + 6531647924.

It is an arithmetic number, because the mean of its divisors is an integer number (19594943757).

Almost surely, 2^78379775022 is an apocalyptic number.

78379775022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78379775022 is a wasteful number, since it uses less digits than its factorization.

78379775022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13063295842.

The product of its (nonzero) digits is 10372320, while the sum is 57.

The spelling of 78379775022 in words is "seventy-eight billion, three hundred seventy-nine million, seven hundred seventy-five thousand, twenty-two".