2553644623 has 8 divisors (see below), whose sum is σ = 2636605440. Its totient is φ = 2470720440.

The previous prime is 2553644603. The next prime is 2553644627. The reversal of 2553644623 is 3264463552.

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 2553644623 - 2²⁵ = 2520090191 is a prime.

It is a super-2 number, since 2×2553644623² = 13042201721153624258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2553644627) 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, 244086 + ... + 254332.

It is an arithmetic number, because the mean of its divisors is an integer number (329575680).

Almost surely, 2^2553644623 is an apocalyptic number.

2553644623 is a deficient number, since it is larger than the sum of its proper divisors (82960817).

2553644623 is a wasteful number, since it uses less digits than its factorization.

2553644623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18317.

The product of its digits is 518400, while the sum is 40.

The square root of 2553644623 is about 50533.5989515886. The cubic root of 2553644623 is about 1366.8477836573.

The spelling of 2553644623 in words is "two billion, five hundred fifty-three million, six hundred forty-four thousand, six hundred twenty-three".