251023503015412 has 12 divisors (see below), whose sum is σ = 440488108836160. Its totient is φ = 125169757633656.

The previous prime is 251023503015409. The next prime is 251023503015413. The reversal of 251023503015412 is 214510305320152.

It is a super-2 number, since 2×251023503015412² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251023503015413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85498466862 + ... + 85498469797.

Almost surely, 2^{251023503015412} is an apocalyptic number.

It is an amenable number.

251023503015412 is a deficient number, since it is larger than the sum of its proper divisors (189464605820748).

251023503015412 is a wasteful number, since it uses less digits than its factorization.

251023503015412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170996937030 (or 170996937028 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 251023503015412 its reverse (214510305320152), we get a palindrome (465533808335564).

The spelling of 251023503015412 in words is "two hundred fifty-one trillion, twenty-three billion, five hundred three million, fifteen thousand, four hundred twelve".