77807967004 has 6 divisors (see below), whose sum is σ = 136163942264. Its totient is φ = 38903983500.

The previous prime is 77807966987. The next prime is 77807967007. The reversal of 77807967004 is 40076970877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77807967007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9725995872 + ... + 9725995879.

Almost surely, 2^77807967004 is an apocalyptic number.

It is an amenable number.

77807967004 is a deficient number, since it is larger than the sum of its proper divisors (58355975260).

77807967004 is a wasteful number, since it uses less digits than its factorization.

77807967004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19451991755 (or 19451991753 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 55.

The spelling of 77807967004 in words is "seventy-seven billion, eight hundred seven million, nine hundred sixty-seven thousand, four".