2156319326451 has 8 divisors (see below), whose sum is σ = 2889686813904. Its totient is φ = 1430249028320.

The previous prime is 2156319326417. The next prime is 2156319326479. The reversal of 2156319326451 is 1546239136512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2156319326451 - 2⁷ = 2156319326323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2156319326451.

It is not an unprimeable number, because it can be changed into a prime (2156319326411) 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, 1824296640 + ... + 1824297821.

It is an arithmetic number, because the mean of its divisors is an integer number (361210851738).

Almost surely, 2^{2156319326451} is an apocalyptic number.

2156319326451 is a deficient number, since it is larger than the sum of its proper divisors (733367487453).

2156319326451 is a wasteful number, since it uses less digits than its factorization.

2156319326451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3648594661.

The product of its digits is 1166400, while the sum is 48.

The spelling of 2156319326451 in words is "two trillion, one hundred fifty-six billion, three hundred nineteen million, three hundred twenty-six thousand, four hundred fifty-one".