76561116556 has 6 divisors (see below), whose sum is σ = 133981953980. Its totient is φ = 38280558276.

The previous prime is 76561116551. The next prime is 76561116559. The reversal of 76561116556 is 65561116567.

It is a super-2 number, since 2×76561116556² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76561116551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9570139566 + ... + 9570139573.

Almost surely, 2^76561116556 is an apocalyptic number.

It is an amenable number.

76561116556 is a deficient number, since it is larger than the sum of its proper divisors (57420837424).

76561116556 is a wasteful number, since it uses less digits than its factorization.

76561116556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19140279143 (or 19140279141 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 49.

It can be divided in two parts, 7656111 and 6556, that added together give a palindrome (7662667).

The spelling of 76561116556 in words is "seventy-six billion, five hundred sixty-one million, one hundred sixteen thousand, five hundred fifty-six".