251952406264 has 16 divisors (see below), whose sum is σ = 508750051320. Its totient is φ = 116285725920.

The previous prime is 251952406249. The next prime is 251952406267. The reversal of 251952406264 is 462604259152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251952406267) 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, 1211309542 + ... + 1211309749.

Almost surely, 2^251952406264 is an apocalyptic number.

It is an amenable number.

251952406264 is an abundant number, since it is smaller than the sum of its proper divisors (256797645056).

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

251952406264 is a wasteful number, since it uses less digits than its factorization.

251952406264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2422619310 (or 2422619306 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 251952406264 in words is "two hundred fifty-one billion, nine hundred fifty-two million, four hundred six thousand, two hundred sixty-four".