77507660317 has 16 divisors (see below), whose sum is σ = 85475891200. Its totient is φ = 69999027120.

The previous prime is 77507660303. The next prime is 77507660327. The reversal of 77507660317 is 71306670577.

It is a cyclic number.

It is not a de Polignac number, because 77507660317 - 2¹¹ = 77507658269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77507660327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 942567 + ... + 1021492.

It is an arithmetic number, because the mean of its divisors is an integer number (5342243200).

Almost surely, 2^77507660317 is an apocalyptic number.

It is an amenable number.

77507660317 is a deficient number, since it is larger than the sum of its proper divisors (7968230883).

77507660317 is a wasteful number, since it uses less digits than its factorization.

77507660317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964176.

The product of its (nonzero) digits is 1296540, while the sum is 49.

The spelling of 77507660317 in words is "seventy-seven billion, five hundred seven million, six hundred sixty thousand, three hundred seventeen".