2156263032553 has 8 divisors (see below), whose sum is σ = 2498058151808. Its totient is φ = 1822907299104.

The previous prime is 2156263032499. The next prime is 2156263032617. The reversal of 2156263032553 is 3552303626512.

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 2156263032553 - 2³³ = 2147673097961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156263032653) 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, 2109845901 + ... + 2109846922.

It is an arithmetic number, because the mean of its divisors is an integer number (312257268976).

Almost surely, 2^{2156263032553} is an apocalyptic number.

It is an amenable number.

2156263032553 is a deficient number, since it is larger than the sum of its proper divisors (341795119255).

2156263032553 is an equidigital number, since it uses as much as digits as its factorization.

2156263032553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4219692903.

The product of its (nonzero) digits is 972000, while the sum is 43.

The spelling of 2156263032553 in words is "two trillion, one hundred fifty-six billion, two hundred sixty-three million, thirty-two thousand, five hundred fifty-three".