77190977984 has 28 divisors (see below), whose sum is σ = 153200633400. Its totient is φ = 38589243648.

The previous prime is 77190977977. The next prime is 77190978023. The reversal of 77190977984 is 48977909177.

It is a hoax number, since the sum of its digits (68) coincides with the sum of the digits of its distinct prime factors.

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, 314507 + ... + 503285.

Almost surely, 2^77190977984 is an apocalyptic number.

It is an amenable number.

77190977984 is a deficient number, since it is larger than the sum of its proper divisors (76009655416).

77190977984 is a wasteful number, since it uses less digits than its factorization.

77190977984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195180 (or 195170 counting only the distinct ones).

The product of its (nonzero) digits is 56010528, while the sum is 68.

The spelling of 77190977984 in words is "seventy-seven billion, one hundred ninety million, nine hundred seventy-seven thousand, nine hundred eighty-four".