77807575756 has 6 divisors (see below), whose sum is σ = 136163257580. Its totient is φ = 38903787876.

The previous prime is 77807575753. The next prime is 77807575787. The reversal of 77807575756 is 65757570877.

It is not an unprimeable number, because it can be changed into a prime (77807575753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9725946966 + ... + 9725946973.

Almost surely, 2^77807575756 is an apocalyptic number.

It is an amenable number.

77807575756 is a deficient number, since it is larger than the sum of its proper divisors (58355681824).

77807575756 is a wasteful number, since it uses less digits than its factorization.

77807575756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19451893943 (or 19451893941 counting only the distinct ones).

The product of its (nonzero) digits is 100842000, while the sum is 64.

The spelling of 77807575756 in words is "seventy-seven billion, eight hundred seven million, five hundred seventy-five thousand, seven hundred fifty-six".