251941208023 has 4 divisors (see below), whose sum is σ = 257800305928. Its totient is φ = 246082110120.

The previous prime is 251941208017. The next prime is 251941208063. The reversal of 251941208023 is 320802149152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251941208023 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 (251941208063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2929548888 + ... + 2929548973.

It is an arithmetic number, because the mean of its divisors is an integer number (64450076482).

Almost surely, 2^251941208023 is an apocalyptic number.

251941208023 is a deficient number, since it is larger than the sum of its proper divisors (5859097905).

251941208023 is an equidigital number, since it uses as much as digits as its factorization.

251941208023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5859097904.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 251941208023 in words is "two hundred fifty-one billion, nine hundred forty-one million, two hundred eight thousand, twenty-three".