65207868731 has 2 divisors, whose sum is σ = 65207868732. Its totient is φ = 65207868730.

The previous prime is 65207868727. The next prime is 65207868797. The reversal of 65207868731 is 13786870256.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65207868731 - 2² = 65207868727 is a prime.

It is a super-2 number, since 2×65207868731² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65207868331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32603934365 + 32603934366.

It is an arithmetic number, because the mean of its divisors is an integer number (32603934366).

Almost surely, 2^65207868731 is an apocalyptic number.

65207868731 is a deficient number, since it is larger than the sum of its proper divisors (1).

65207868731 is an equidigital number, since it uses as much as digits as its factorization.

65207868731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 65207868731 in words is "sixty-five billion, two hundred seven million, eight hundred sixty-eight thousand, seven hundred thirty-one".