251342161489271 has 2 divisors, whose sum is σ = 251342161489272. Its totient is φ = 251342161489270.

The previous prime is 251342161489259. The next prime is 251342161489303. The reversal of 251342161489271 is 172984161243152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 251342161489271 - 2¹⁰ = 251342161488247 is a prime.

It is a super-2 number, since 2×251342161489271² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251342161489571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125671080744635 + 125671080744636.

It is an arithmetic number, because the mean of its divisors is an integer number (125671080744636).

Almost surely, 2^{251342161489271} is an apocalyptic number.

251342161489271 is a deficient number, since it is larger than the sum of its proper divisors (1).

251342161489271 is an equidigital number, since it uses as much as digits as its factorization.

251342161489271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 56.

The spelling of 251342161489271 in words is "two hundred fifty-one trillion, three hundred forty-two billion, one hundred sixty-one million, four hundred eighty-nine thousand, two hundred seventy-one".