251401074673 has 12 divisors (see below), whose sum is σ = 297240350772. Its totient is φ = 211954065120.

The previous prime is 251401074599. The next prime is 251401074751. The reversal of 251401074673 is 376470104152.

It can be written as a sum of positive squares in 2 ways, for example, as 17597879649 + 233803195024 = 132657^2 + 483532^2 .

It is not a de Polignac number, because 251401074673 - 2⁹ = 251401074161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (251401071673) 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 11 ways as a sum of consecutive naturals, for example, 42051390 + ... + 42057367.

It is an arithmetic number, because the mean of its divisors is an integer number (24770029231).

Almost surely, 2^251401074673 is an apocalyptic number.

It is an amenable number.

251401074673 is a deficient number, since it is larger than the sum of its proper divisors (45839276099).

251401074673 is an equidigital number, since it uses as much as digits as its factorization.

251401074673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84108832 (or 84108825 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 251401074673 in words is "two hundred fifty-one billion, four hundred one million, seventy-four thousand, six hundred seventy-three".