12801816774868 has 24 divisors (see below), whose sum is σ = 24446653378560. Its totient is φ = 5817383493120.

The previous prime is 12801816774863. The next prime is 12801816774907. The reversal of 12801816774868 is 86847761810821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12801816774863) 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, 40443853 + ... + 40759156.

It is an arithmetic number, because the mean of its divisors is an integer number (1018610557440).

Almost surely, 2^{12801816774868} is an apocalyptic number.

It is an amenable number.

12801816774868 is a deficient number, since it is larger than the sum of its proper divisors (11644836603692).

12801816774868 is a wasteful number, since it uses less digits than its factorization.

12801816774868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81206607 (or 81206605 counting only the distinct ones).

The product of its (nonzero) digits is 57802752, while the sum is 67.

The spelling of 12801816774868 in words is "twelve trillion, eight hundred one billion, eight hundred sixteen million, seven hundred seventy-four thousand, eight hundred sixty-eight".