251468631287 has 2 divisors, whose sum is σ = 251468631288. Its totient is φ = 251468631286.

The previous prime is 251468631179. The next prime is 251468631343. The reversal of 251468631287 is 782136864152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 251468631287 - 2¹⁰ = 251468630263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251468631587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125734315643 + 125734315644.

It is an arithmetic number, because the mean of its divisors is an integer number (125734315644).

Almost surely, 2^251468631287 is an apocalyptic number.

251468631287 is a deficient number, since it is larger than the sum of its proper divisors (1).

251468631287 is an equidigital number, since it uses as much as digits as its factorization.

251468631287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 53.

The spelling of 251468631287 in words is "two hundred fifty-one billion, four hundred sixty-eight million, six hundred thirty-one thousand, two hundred eighty-seven".