77494765708 has 48 divisors (see below), whose sum is σ = 139393820160. Its totient is φ = 37686872000.

The previous prime is 77494765661. The next prime is 77494765753. The reversal of 77494765708 is 80756749477.

It is a self number, because there is not a number n which added to its sum of digits gives 77494765708.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5995773 + ... + 6008683.

It is an arithmetic number, because the mean of its divisors is an integer number (2904037920).

Almost surely, 2^77494765708 is an apocalyptic number.

It is an amenable number.

77494765708 is a deficient number, since it is larger than the sum of its proper divisors (61899054452).

77494765708 is a wasteful number, since it uses less digits than its factorization.

77494765708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13278 (or 13276 counting only the distinct ones).

The product of its (nonzero) digits is 82978560, while the sum is 64.

The spelling of 77494765708 in words is "seventy-seven billion, four hundred ninety-four million, seven hundred sixty-five thousand, seven hundred eight".