77020054464 has 56 divisors (see below), whose sum is σ = 204126175440. Its totient is φ = 25630019584.

The previous prime is 77020054459. The next prime is 77020054469. The reversal of 77020054464 is 46445002077.

It is an interprime number because it is at equal distance from previous prime (77020054459) and next prime (77020054469).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77020054469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224379 + ... + 452090.

Almost surely, 2^77020054464 is an apocalyptic number.

It is an amenable number.

77020054464 is an abundant number, since it is smaller than the sum of its proper divisors (127106120976).

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

77020054464 is a wasteful number, since it uses less digits than its factorization.

77020054464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677077 (or 677067 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 39.

The spelling of 77020054464 in words is "seventy-seven billion, twenty million, fifty-four thousand, four hundred sixty-four".