251442314253313 has 4 divisors (see below), whose sum is σ = 251446805393200. Its totient is φ = 251437823113428.

The previous prime is 251442314253293. The next prime is 251442314253337. The reversal of 251442314253313 is 313352413244152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251442314253313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 251442314253313.

It is not an unprimeable number, because it can be changed into a prime (251442314253413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2245485963 + ... + 2245597936.

It is an arithmetic number, because the mean of its divisors is an integer number (62861701348300).

Almost surely, 2^{251442314253313} is an apocalyptic number.

It is an amenable number.

251442314253313 is a deficient number, since it is larger than the sum of its proper divisors (4491139887).

251442314253313 is an equidigital number, since it uses as much as digits as its factorization.

251442314253313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4491139886.

The product of its digits is 1036800, while the sum is 43.

Adding to 251442314253313 its reverse (313352413244152), we get a palindrome (564794727497465).

The spelling of 251442314253313 in words is "two hundred fifty-one trillion, four hundred forty-two billion, three hundred fourteen million, two hundred fifty-three thousand, three hundred thirteen".