251411053432 has 128 divisors (see below), whose sum is σ = 639105085440. Its totient is φ = 89698682880.

The previous prime is 251411053429. The next prime is 251411053493. The reversal of 251411053432 is 234350114152.

251411053432 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 251411053394 and 251411053403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63033 + ... + 711895.

It is an arithmetic number, because the mean of its divisors is an integer number (4993008480).

Almost surely, 2^251411053432 is an apocalyptic number.

251411053432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 251411053432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319552542720).

251411053432 is an abundant number, since it is smaller than the sum of its proper divisors (387694032008).

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

251411053432 is a wasteful number, since it uses less digits than its factorization.

251411053432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648941 (or 648937 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 251411053432 its reverse (234350114152), we get a palindrome (485761167584).

The spelling of 251411053432 in words is "two hundred fifty-one billion, four hundred eleven million, fifty-three thousand, four hundred thirty-two".