77722345916 has 12 divisors (see below), whose sum is σ = 136274174232. Its totient is φ = 38786867568.

The previous prime is 77722345879. The next prime is 77722345927. The reversal of 77722345916 is 61954322777.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18573995 + ... + 18578178.

It is an arithmetic number, because the mean of its divisors is an integer number (11356181186).

Almost surely, 2^77722345916 is an apocalyptic number.

It is an amenable number.

77722345916 is a deficient number, since it is larger than the sum of its proper divisors (58551828316).

77722345916 is a wasteful number, since it uses less digits than its factorization.

77722345916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37152700 (or 37152698 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 53.

The spelling of 77722345916 in words is "seventy-seven billion, seven hundred twenty-two million, three hundred forty-five thousand, nine hundred sixteen".