251263765063 has 2 divisors, whose sum is σ = 251263765064. Its totient is φ = 251263765062.

The previous prime is 251263765003. The next prime is 251263765133. The reversal of 251263765063 is 360567362152.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251263765063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251263765003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125631882531 + 125631882532.

It is an arithmetic number, because the mean of its divisors is an integer number (125631882532).

Almost surely, 2^251263765063 is an apocalyptic number.

251263765063 is a deficient number, since it is larger than the sum of its proper divisors (1).

251263765063 is an equidigital number, since it uses as much as digits as its factorization.

251263765063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1360800, while the sum is 46.

The spelling of 251263765063 in words is "two hundred fifty-one billion, two hundred sixty-three million, seven hundred sixty-five thousand, sixty-three".