2365866696961 has 4 divisors (see below), whose sum is σ = 2505035326212. Its totient is φ = 2226698067712.

The previous prime is 2365866696899. The next prime is 2365866696971. The reversal of 2365866696961 is 1696966685632.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1874667564225 + 491199132736 = 1369185^2 + 700856^2 .

It is a cyclic number.

It is not a de Polignac number, because 2365866696961 - 2³³ = 2357276762369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2365866696971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69584314600 + ... + 69584314633.

It is an arithmetic number, because the mean of its divisors is an integer number (626258831553).

Almost surely, 2^{2365866696961} is an apocalyptic number.

It is an amenable number.

2365866696961 is a deficient number, since it is larger than the sum of its proper divisors (139168629251).

2365866696961 is a wasteful number, since it uses less digits than its factorization.

2365866696961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139168629250.

The product of its digits is 906992640, while the sum is 73.

The spelling of 2365866696961 in words is "two trillion, three hundred sixty-five billion, eight hundred sixty-six million, six hundred ninety-six thousand, nine hundred sixty-one".