77956087404022 has 4 divisors (see below), whose sum is σ = 116934131106036. Its totient is φ = 38978043702010.

The previous prime is 77956087404011. The next prime is 77956087404037. The reversal of 77956087404022 is 22040478065977.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19489021851004 + ... + 19489021851007.

It is an arithmetic number, because the mean of its divisors is an integer number (29233532776509).

Almost surely, 2^{77956087404022} is an apocalyptic number.

77956087404022 is a deficient number, since it is larger than the sum of its proper divisors (38978043702014).

77956087404022 is a wasteful number, since it uses less digits than its factorization.

77956087404022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38978043702013.

The product of its (nonzero) digits is 47416320, while the sum is 61.

The spelling of 77956087404022 in words is "seventy-seven trillion, nine hundred fifty-six billion, eighty-seven million, four hundred four thousand, twenty-two".