251130023532 has 72 divisors (see below), whose sum is σ = 640437252000. Its totient is φ = 82969636608.

The previous prime is 251130023527. The next prime is 251130023549. The reversal of 251130023532 is 235320031152.

It is a happy number.

251130023532 is a `hidden beast` number, since 2 + 5 + 1 + 1 + 300 + 2 + 353 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 251130023496 and 251130023505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2038344 + ... + 2158032.

Almost surely, 2^251130023532 is an apocalyptic number.

It is an amenable number.

251130023532 is an abundant number, since it is smaller than the sum of its proper divisors (389307228468).

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

251130023532 is a wasteful number, since it uses less digits than its factorization.

251130023532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120215 (or 120210 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 251130023532 its reverse (235320031152), we get a palindrome (486450054684).

The spelling of 251130023532 in words is "two hundred fifty-one billion, one hundred thirty million, twenty-three thousand, five hundred thirty-two".