251340200055 has 96 divisors (see below), whose sum is σ = 524308561920. Its totient is φ = 108894170880.

The previous prime is 251340200017. The next prime is 251340200081. The reversal of 251340200055 is 550002043152.

It is a happy number.

251340200055 is a `hidden beast` number, since 251 + 3 + 402 + 0 + 0 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 251340200055 - 2⁹ = 251340199543 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 630570 + ... + 948840.

It is an arithmetic number, because the mean of its divisors is an integer number (5461547520).

Almost surely, 2^251340200055 is an apocalyptic number.

251340200055 is an abundant number, since it is smaller than the sum of its proper divisors (272968361865).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251340200055 is a wasteful number, since it uses less digits than its factorization.

251340200055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318421 (or 318418 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 251340200055 in words is "two hundred fifty-one billion, three hundred forty million, two hundred thousand, fifty-five".