77923314820 has 48 divisors (see below), whose sum is σ = 176293454400. Its totient is φ = 28760766336.

The previous prime is 77923314809. The next prime is 77923314839. The reversal of 77923314820 is 2841332977.

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, 646219 + ... + 757261.

It is an arithmetic number, because the mean of its divisors is an integer number (3672780300).

Almost surely, 2^77923314820 is an apocalyptic number.

It is an amenable number.

77923314820 is an abundant number, since it is smaller than the sum of its proper divisors (98370139580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77923314820 is a wasteful number, since it uses less digits than its factorization.

77923314820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113764 (or 113762 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 77923314820 in words is "seventy-seven billion, nine hundred twenty-three million, three hundred fourteen thousand, eight hundred twenty".