13776977864 has 32 divisors (see below), whose sum is σ = 28003160640. Its totient is φ = 6316488000.

The previous prime is 13776977849. The next prime is 13776977867. The reversal of 13776977864 is 46877967731.

It is a self number, because there is not a number n which added to its sum of digits gives 13776977864.

It is not an unprimeable number, because it can be changed into a prime (13776977867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422942 + ... + 454349.

It is an arithmetic number, because the mean of its divisors is an integer number (875098770).

Almost surely, 2^13776977864 is an apocalyptic number.

It is an amenable number.

13776977864 is an abundant number, since it is smaller than the sum of its proper divisors (14226182776).

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

13776977864 is a wasteful number, since it uses less digits than its factorization.

13776977864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877461 (or 877457 counting only the distinct ones).

The product of its digits is 74680704, while the sum is 65.

The spelling of 13776977864 in words is "thirteen billion, seven hundred seventy-six million, nine hundred seventy-seven thousand, eight hundred sixty-four".