251303404544412 has 96 divisors (see below), whose sum is σ = 640109953582848. Its totient is φ = 76101537600000.

The previous prime is 251303404544407. The next prime is 251303404544429. The reversal of 251303404544412 is 214445404303152.

It is a super-2 number, since 2×251303404544412² (a number of 30 digits) contains 22 as substring.

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, 2249126587 + ... + 2249238317.

It is an arithmetic number, because the mean of its divisors is an integer number (6667812016488).

Almost surely, 2^{251303404544412} is an apocalyptic number.

251303404544412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

251303404544412 is an abundant number, since it is smaller than the sum of its proper divisors (388806549038436).

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

251303404544412 is a wasteful number, since it uses less digits than its factorization.

251303404544412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123011 (or 123009 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 42.

Adding to 251303404544412 its reverse (214445404303152), we get a palindrome (465748808847564).

The spelling of 251303404544412 in words is "two hundred fifty-one trillion, three hundred three billion, four hundred four million, five hundred forty-four thousand, four hundred twelve".