12540201760857 has 24 divisors (see below), whose sum is σ = 17277985035360. Its totient is φ = 8090006164800.

The previous prime is 12540201760843. The next prime is 12540201760861. The reversal of 12540201760857 is 75806710204521.

It is a de Polignac number, because none of the positive numbers 2^k-12540201760857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12540201760057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56797357 + ... + 57017717.

It is an arithmetic number, because the mean of its divisors is an integer number (719916043140).

Almost surely, 2^{12540201760857} is an apocalyptic number.

It is an amenable number.

12540201760857 is a deficient number, since it is larger than the sum of its proper divisors (4737783274503).

12540201760857 is a wasteful number, since it uses less digits than its factorization.

12540201760857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240165 (or 240134 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 48.

The spelling of 12540201760857 in words is "twelve trillion, five hundred forty billion, two hundred one million, seven hundred sixty thousand, eight hundred fifty-seven".