12556770157401 has 16 divisors (see below), whose sum is σ = 16784157250560. Its totient is φ = 8350286394240.

The previous prime is 12556770157367. The next prime is 12556770157417. The reversal of 12556770157401 is 10475107765521.

It is not a de Polignac number, because 12556770157401 - 2¹¹ = 12556770155353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12556770157471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9922696 + ... + 11116358.

It is an arithmetic number, because the mean of its divisors is an integer number (1049009828160).

Almost surely, 2^{12556770157401} is an apocalyptic number.

It is an amenable number.

12556770157401 is a deficient number, since it is larger than the sum of its proper divisors (4227387093159).

12556770157401 is a wasteful number, since it uses less digits than its factorization.

12556770157401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202416.

The product of its (nonzero) digits is 2058000, while the sum is 51.

The spelling of 12556770157401 in words is "twelve trillion, five hundred fifty-six billion, seven hundred seventy million, one hundred fifty-seven thousand, four hundred one".