251351142032479 has 2 divisors, whose sum is σ = 251351142032480. Its totient is φ = 251351142032478.

The previous prime is 251351142032477. The next prime is 251351142032579. The reversal of 251351142032479 is 974230241153152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 251351142032479 - 2¹ = 251351142032477 is a prime.

Together with 251351142032477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251351142032477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125675571016239 + 125675571016240.

It is an arithmetic number, because the mean of its divisors is an integer number (125675571016240).

Almost surely, 2^{251351142032479} is an apocalyptic number.

251351142032479 is a deficient number, since it is larger than the sum of its proper divisors (1).

251351142032479 is an equidigital number, since it uses as much as digits as its factorization.

251351142032479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 251351142032479 in words is "two hundred fifty-one trillion, three hundred fifty-one billion, one hundred forty-two million, thirty-two thousand, four hundred seventy-nine".