77766070617776 has 10 divisors (see below), whose sum is σ = 150671761821972. Its totient is φ = 38883035308880.

The previous prime is 77766070617761. The next prime is 77766070617779. The reversal of 77766070617776 is 67771607066777.

It is not an unprimeable number, because it can be changed into a prime (77766070617779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2430189706790 + ... + 2430189706821.

Almost surely, 2^{77766070617776} is an apocalyptic number.

It is an amenable number.

77766070617776 is a deficient number, since it is larger than the sum of its proper divisors (72905691204196).

77766070617776 is a wasteful number, since it uses less digits than its factorization.

77766070617776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4860379413619 (or 4860379413613 counting only the distinct ones).

The product of its (nonzero) digits is 1067311728, while the sum is 74.

The spelling of 77766070617776 in words is "seventy-seven trillion, seven hundred sixty-six billion, seventy million, six hundred seventeen thousand, seven hundred seventy-six".