251339713133 has 2 divisors, whose sum is σ = 251339713134. Its totient is φ = 251339713132.

The previous prime is 251339713117. The next prime is 251339713147. The reversal of 251339713133 is 331317933152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250782611524 + 557101609 = 500782^2 + 23603^2 .

It is a cyclic number.

It is not a de Polignac number, because 251339713133 - 2⁴ = 251339713117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251339713333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125669856566 + 125669856567.

It is an arithmetic number, because the mean of its divisors is an integer number (125669856567).

Almost surely, 2^251339713133 is an apocalyptic number.

It is an amenable number.

251339713133 is a deficient number, since it is larger than the sum of its proper divisors (1).

251339713133 is an equidigital number, since it uses as much as digits as its factorization.

251339713133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153090, while the sum is 41.

The spelling of 251339713133 in words is "two hundred fifty-one billion, three hundred thirty-nine million, seven hundred thirteen thousand, one hundred thirty-three".