366520025663 has 16 divisors (see below), whose sum is σ = 404625540480. Its totient is φ = 329234824800.

The previous prime is 366520025587. The next prime is 366520025681.

366520025663 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 366520025663 - 2²⁸ = 366251590207 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366520025563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245420 + ... + 890657.

It is an arithmetic number, because the mean of its divisors is an integer number (25289096280).

Almost surely, 2^366520025663 is an apocalyptic number.

366520025663 is a deficient number, since it is larger than the sum of its proper divisors (38105514817).

366520025663 is a wasteful number, since it uses less digits than its factorization.

366520025663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136438.

The product of its (nonzero) digits is 1166400, while the sum is 44.

The spelling of 366520025663 in words is "three hundred sixty-six billion, five hundred twenty million, twenty-five thousand, six hundred sixty-three".