51440460308663 has 2 divisors, whose sum is σ = 51440460308664. Its totient is φ = 51440460308662.

The previous prime is 51440460308647. The next prime is 51440460308683. The reversal of 51440460308663 is 36680306404415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51440460308663 - 2⁴ = 51440460308647 is a prime.

It is a super-2 number, since 2×51440460308663² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51440460308683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25720230154331 + 25720230154332.

It is an arithmetic number, because the mean of its divisors is an integer number (25720230154332).

Almost surely, 2^{51440460308663} is an apocalyptic number.

51440460308663 is a deficient number, since it is larger than the sum of its proper divisors (1).

51440460308663 is an equidigital number, since it uses as much as digits as its factorization.

51440460308663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4976640, while the sum is 50.

The spelling of 51440460308663 in words is "fifty-one trillion, four hundred forty billion, four hundred sixty million, three hundred eight thousand, six hundred sixty-three".