77970059645 has 24 divisors (see below), whose sum is σ = 94487845248. Its totient is φ = 61766038880.

The previous prime is 77970059621. The next prime is 77970059701. The reversal of 77970059645 is 54695007977.

It is not a de Polignac number, because 77970059645 - 2⁸ = 77970059389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63752504 + ... + 63753726.

It is an arithmetic number, because the mean of its divisors is an integer number (3936993552).

Almost surely, 2^77970059645 is an apocalyptic number.

It is an amenable number.

77970059645 is a deficient number, since it is larger than the sum of its proper divisors (16517785603).

77970059645 is a wasteful number, since it uses less digits than its factorization.

77970059645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233 (or 2102 counting only the distinct ones).

The product of its (nonzero) digits is 16669800, while the sum is 59.

The spelling of 77970059645 in words is "seventy-seven billion, nine hundred seventy million, fifty-nine thousand, six hundred forty-five".