251333400052 has 24 divisors (see below), whose sum is σ = 516252391424. Its totient is φ = 104803116192.

The previous prime is 251333400041. The next prime is 251333400077. The reversal of 251333400052 is 250004333152.

251333400052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×251333400052⁴ (a number of 47 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121298868 + ... + 121300939.

Almost surely, 2^251333400052 is an apocalyptic number.

It is an amenable number.

251333400052 is an abundant number, since it is smaller than the sum of its proper divisors (264918991372).

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

251333400052 is a wasteful number, since it uses less digits than its factorization.

251333400052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242599855 (or 242599853 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

The spelling of 251333400052 in words is "two hundred fifty-one billion, three hundred thirty-three million, four hundred thousand, fifty-two".