3665596955663 has 4 divisors (see below), whose sum is σ = 3824970736368. Its totient is φ = 3506223174960.

The previous prime is 3665596955653. The next prime is 3665596955701.

3665596955663 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 3665596955663 - 2⁶ = 3665596955599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665596955653) 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, 79686890318 + ... + 79686890363.

It is an arithmetic number, because the mean of its divisors is an integer number (956242684092).

Almost surely, 2^{3665596955663} is an apocalyptic number.

3665596955663 is a deficient number, since it is larger than the sum of its proper divisors (159373780705).

3665596955663 is a wasteful number, since it uses less digits than its factorization.

3665596955663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159373780704.

The product of its digits is 3542940000, while the sum is 74.

The spelling of 3665596955663 in words is "three trillion, six hundred sixty-five billion, five hundred ninety-six million, nine hundred fifty-five thousand, six hundred sixty-three".