77863473576 has 144 divisors (see below), whose sum is σ = 256017222240. Its totient is φ = 20938037760.

The previous prime is 77863473547. The next prime is 77863473613. The reversal of 77863473576 is 67537436877.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 121630 + ... + 412941.

Almost surely, 2^77863473576 is an apocalyptic number.

It is an amenable number.

77863473576 is an abundant number, since it is smaller than the sum of its proper divisors (178153748664).

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

77863473576 is a wasteful number, since it uses less digits than its factorization.

77863473576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534624 (or 534600 counting only the distinct ones).

The product of its digits is 124467840, while the sum is 63.

The spelling of 77863473576 in words is "seventy-seven billion, eight hundred sixty-three million, four hundred seventy-three thousand, five hundred seventy-six".