251552211202432 has 48 divisors (see below), whose sum is σ = 582957810892620. Its totient is φ = 107808090512640.

The previous prime is 251552211202349. The next prime is 251552211202463. The reversal of 251552211202432 is 234202112255152.

It is a junction number, because it is equal to n+sod(n) for n = 251552211202391 and 251552211202400.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 20053581994 + ... + 20053594537.

Almost surely, 2^{251552211202432} is an apocalyptic number.

It is an amenable number.

251552211202432 is an abundant number, since it is smaller than the sum of its proper divisors (331405599690188).

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

251552211202432 is an equidigital number, since it uses as much as digits as its factorization.

251552211202432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40107176559 (or 40107176540 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 251552211202432 its reverse (234202112255152), we get a palindrome (485754323457584).

The spelling of 251552211202432 in words is "two hundred fifty-one trillion, five hundred fifty-two billion, two hundred eleven million, two hundred two thousand, four hundred thirty-two".