865735414961 has 2 divisors, whose sum is σ = 865735414962. Its totient is φ = 865735414960.

The previous prime is 865735414937. The next prime is 865735414993. The reversal of 865735414961 is 169414537568.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 854811193600 + 10924221361 = 924560^2 + 104519^2 .

It is a cyclic number.

It is not a de Polignac number, because 865735414961 - 2³⁴ = 848555545777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 865735414961.

It is not a weakly prime, because it can be changed into another prime (865735414361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432867707480 + 432867707481.

It is an arithmetic number, because the mean of its divisors is an integer number (432867707481).

Almost surely, 2^865735414961 is an apocalyptic number.

It is an amenable number.

865735414961 is a deficient number, since it is larger than the sum of its proper divisors (1).

865735414961 is an equidigital number, since it uses as much as digits as its factorization.

865735414961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21772800, while the sum is 59.

The spelling of 865735414961 in words is "eight hundred sixty-five billion, seven hundred thirty-five million, four hundred fourteen thousand, nine hundred sixty-one".