2151326312613 has 8 divisors (see below), whose sum is σ = 3187150092800. Its totient is φ = 1434217541724.

The previous prime is 2151326312581. The next prime is 2151326312633. The reversal of 2151326312613 is 3162136231512.

2151326312613 is a `hidden beast` number, since 2 + 1 + 5 + 1 + 3 + 2 + 6 + 31 + 2 + 613 = 666.

It is not a de Polignac number, because 2151326312613 - 2⁵ = 2151326312581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151326312633) 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, 39839376133 + ... + 39839376186.

It is an arithmetic number, because the mean of its divisors is an integer number (398393761600).

Almost surely, 2^{2151326312613} is an apocalyptic number.

It is an amenable number.

2151326312613 is a deficient number, since it is larger than the sum of its proper divisors (1035823780187).

2151326312613 is an equidigital number, since it uses as much as digits as its factorization.

2151326312613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79678752328 (or 79678752322 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The spelling of 2151326312613 in words is "two trillion, one hundred fifty-one billion, three hundred twenty-six million, three hundred twelve thousand, six hundred thirteen".