36218646784 has 36 divisors (see below), whose sum is σ = 72318741516. Its totient is φ = 18103580672.

The previous prime is 36218646721. The next prime is 36218646799. The reversal of 36218646784 is 48764681263.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18933760000 + 17284886784 = 137600^2 + 131472^2 .

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, 853002 + ... + 894454.

It is an arithmetic number, because the mean of its divisors is an integer number (2008853931).

Almost surely, 2^36218646784 is an apocalyptic number.

It is an amenable number.

36218646784 is a deficient number, since it is larger than the sum of its proper divisors (36100094732).

36218646784 is an equidigital number, since it uses as much as digits as its factorization.

36218646784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44882 (or 44868 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 55.

The spelling of 36218646784 in words is "thirty-six billion, two hundred eighteen million, six hundred forty-six thousand, seven hundred eighty-four".