2156252154563 has 8 divisors (see below), whose sum is σ = 2322134773728. Its totient is φ = 1990371973824.

The previous prime is 2156252154521. The next prime is 2156252154569. The reversal of 2156252154563 is 3654512526512.

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

It is not a de Polignac number, because 2156252154563 - 2³⁴ = 2139072285379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156252154569) 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, 1496495 + ... + 2559687.

It is an arithmetic number, because the mean of its divisors is an integer number (290266846716).

Almost surely, 2^{2156252154563} is an apocalyptic number.

2156252154563 is a deficient number, since it is larger than the sum of its proper divisors (165882619165).

2156252154563 is a wasteful number, since it uses less digits than its factorization.

2156252154563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219213.

The product of its digits is 2160000, while the sum is 47.

The spelling of 2156252154563 in words is "two trillion, one hundred fifty-six billion, two hundred fifty-two million, one hundred fifty-four thousand, five hundred sixty-three".