251240663083 has 2 divisors, whose sum is σ = 251240663084. Its totient is φ = 251240663082.

The previous prime is 251240663039. The next prime is 251240663123. The reversal of 251240663083 is 380366042152.

It is an a-pointer prime, because the next prime (251240663123) can be obtained adding 251240663083 to its sum of digits (40).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 251240663083 - 2³⁷ = 113801709611 is a prime.

It is a super-3 number, since 3×251240663083³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (251240663033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125620331541 + 125620331542.

It is an arithmetic number, because the mean of its divisors is an integer number (125620331542).

Almost surely, 2^251240663083 is an apocalyptic number.

251240663083 is a deficient number, since it is larger than the sum of its proper divisors (1).

251240663083 is an equidigital number, since it uses as much as digits as its factorization.

251240663083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 251240663083 in words is "two hundred fifty-one billion, two hundred forty million, six hundred sixty-three thousand, eighty-three".