36655645385 has 4 divisors (see below), whose sum is σ = 43986774468. Its totient is φ = 29324516304.

The previous prime is 36655645379. The next prime is 36655645409. The reversal of 36655645385 is 58354655663.

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 23724316729 + 12931328656 = 154027^2 + 113716^2 .

It is a cyclic number.

It is not a de Polignac number, because 36655645385 - 2⁶ = 36655645321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36655645385.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3665564534 + ... + 3665564543.

It is an arithmetic number, because the mean of its divisors is an integer number (10996693617).

Almost surely, 2^36655645385 is an apocalyptic number.

It is an amenable number.

36655645385 is a deficient number, since it is larger than the sum of its proper divisors (7331129083).

36655645385 is an equidigital number, since it uses as much as digits as its factorization.

36655645385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7331129082.

The product of its digits is 38880000, while the sum is 56.

The spelling of 36655645385 in words is "thirty-six billion, six hundred fifty-five million, six hundred forty-five thousand, three hundred eighty-five".