65326791731 has 2 divisors, whose sum is σ = 65326791732. Its totient is φ = 65326791730.

The previous prime is 65326791727. The next prime is 65326791773. The reversal of 65326791731 is 13719762356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65326791731 - 2² = 65326791727 is a prime.

It is a super-2 number, since 2×65326791731² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65326791731.

It is not a weakly prime, because it can be changed into another prime (65326793731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32663395865 + 32663395866.

It is an arithmetic number, because the mean of its divisors is an integer number (32663395866).

Almost surely, 2^65326791731 is an apocalyptic number.

65326791731 is a deficient number, since it is larger than the sum of its proper divisors (1).

65326791731 is an equidigital number, since it uses as much as digits as its factorization.

65326791731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 50.

The spelling of 65326791731 in words is "sixty-five billion, three hundred twenty-six million, seven hundred ninety-one thousand, seven hundred thirty-one".