77777700748 has 24 divisors (see below), whose sum is σ = 148620643920. Its totient is φ = 35321133120.

The previous prime is 77777700733. The next prime is 77777700751. The reversal of 77777700748 is 84700777777.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 760543 + ... + 856726.

It is an arithmetic number, because the mean of its divisors is an integer number (6192526830).

Almost surely, 2^77777700748 is an apocalyptic number.

It is an amenable number.

77777700748 is a deficient number, since it is larger than the sum of its proper divisors (70842943172).

77777700748 is a wasteful number, since it uses less digits than its factorization.

77777700748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618377 (or 1618375 counting only the distinct ones).

The product of its (nonzero) digits is 26353376, while the sum is 61.

The spelling of 77777700748 in words is "seventy-seven billion, seven hundred seventy-seven million, seven hundred thousand, seven hundred forty-eight".