12657175370421 has 32 divisors (see below), whose sum is σ = 19134786478080. Its totient is φ = 7399780660800.

The previous prime is 12657175370419. The next prime is 12657175370423. The reversal of 12657175370421 is 12407357175621.

It is an interprime number because it is at equal distance from previous prime (12657175370419) and next prime (12657175370423).

It is not a de Polignac number, because 12657175370421 - 2¹ = 12657175370419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12657175370423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155678650 + ... + 155759931.

It is an arithmetic number, because the mean of its divisors is an integer number (597962077440).

Almost surely, 2^{12657175370421} is an apocalyptic number.

It is an amenable number.

12657175370421 is a deficient number, since it is larger than the sum of its proper divisors (6477611107659).

12657175370421 is a wasteful number, since it uses less digits than its factorization.

12657175370421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311438657.

The product of its (nonzero) digits is 2469600, while the sum is 51.

The spelling of 12657175370421 in words is "twelve trillion, six hundred fifty-seven billion, one hundred seventy-five million, three hundred seventy thousand, four hundred twenty-one".