77761360474216 has 16 divisors (see below), whose sum is σ = 146271369385440. Its totient is φ = 38755661971440.

The previous prime is 77761360474199. The next prime is 77761360474223. The reversal of 77761360474216 is 61247406316777.

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, 15627280566 + ... + 15627285541.

It is an arithmetic number, because the mean of its divisors is an integer number (9141960586590).

Almost surely, 2^{77761360474216} is an apocalyptic number.

It is an amenable number.

77761360474216 is a deficient number, since it is larger than the sum of its proper divisors (68510008911224).

77761360474216 is a wasteful number, since it uses less digits than its factorization.

77761360474216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31254566424 (or 31254566420 counting only the distinct ones).

The product of its (nonzero) digits is 49787136, while the sum is 61.

The spelling of 77761360474216 in words is "seventy-seven trillion, seven hundred sixty-one billion, three hundred sixty million, four hundred seventy-four thousand, two hundred sixteen".