36018631568 has 20 divisors (see below), whose sum is σ = 69846660108. Its totient is φ = 17993687040.

The previous prime is 36018631543. The next prime is 36018631601. The reversal of 36018631568 is 86513681063.

It can be written as a sum of positive squares in 2 ways, for example, as 16433188864 + 19585442704 = 128192^2 + 139948^2 .

It is a super-2 number, since 2×36018631568² (a number of 22 digits) contains 22 as substring.

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, 957773 + ... + 994668.

Almost surely, 2^36018631568 is an apocalyptic number.

It is an amenable number.

36018631568 is a deficient number, since it is larger than the sum of its proper divisors (33828028540).

36018631568 is a wasteful number, since it uses less digits than its factorization.

36018631568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953602 (or 1953596 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 36018631568 in words is "thirty-six billion, eighteen million, six hundred thirty-one thousand, five hundred sixty-eight".