77340631816 has 32 divisors (see below), whose sum is σ = 165826319040. Its totient is φ = 33126706368.

The previous prime is 77340631813. The next prime is 77340631843. The reversal of 77340631816 is 61813604377.

It is not an unprimeable number, because it can be changed into a prime (77340631813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304291 + ... + 497266.

It is an arithmetic number, because the mean of its divisors is an integer number (5182072470).

Almost surely, 2^77340631816 is an apocalyptic number.

It is an amenable number.

77340631816 is an abundant number, since it is smaller than the sum of its proper divisors (88485687224).

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

77340631816 is a wasteful number, since it uses less digits than its factorization.

77340631816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803293 (or 803289 counting only the distinct ones).

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

The spelling of 77340631816 in words is "seventy-seven billion, three hundred forty million, six hundred thirty-one thousand, eight hundred sixteen".