251215553545023 has 8 divisors (see below), whose sum is σ = 335196615983536. Its totient is φ = 167355763401600.

The previous prime is 251215553545007. The next prime is 251215553545049. The reversal of 251215553545023 is 320545355512152.

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

It is not a de Polignac number, because 251215553545023 - 2⁴ = 251215553545007 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 (251215553545063) 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, 30318068938 + ... + 30318077223.

It is an arithmetic number, because the mean of its divisors is an integer number (41899576997942).

Almost surely, 2^{251215553545023} is an apocalyptic number.

251215553545023 is a deficient number, since it is larger than the sum of its proper divisors (83981062438513).

251215553545023 is a wasteful number, since it uses less digits than its factorization.

251215553545023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60636147545.

The product of its (nonzero) digits is 4500000, while the sum is 48.

The spelling of 251215553545023 in words is "two hundred fifty-one trillion, two hundred fifteen billion, five hundred fifty-three million, five hundred forty-five thousand, twenty-three".