251164330271 has 2 divisors, whose sum is σ = 251164330272. Its totient is φ = 251164330270.

The previous prime is 251164330211. The next prime is 251164330289. The reversal of 251164330271 is 172033461152.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251164330271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251164330211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125582165135 + 125582165136.

It is an arithmetic number, because the mean of its divisors is an integer number (125582165136).

Almost surely, 2^251164330271 is an apocalyptic number.

251164330271 is a deficient number, since it is larger than the sum of its proper divisors (1).

251164330271 is an equidigital number, since it uses as much as digits as its factorization.

251164330271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 251164330271 in words is "two hundred fifty-one billion, one hundred sixty-four million, three hundred thirty thousand, two hundred seventy-one".