36644644644594 has 48 divisors (see below), whose sum is σ = 85255718636736. Its totient is φ = 10469796405600.

The previous prime is 36644644644557. The next prime is 36644644644599. The reversal of 36644644644594 is 49544644644663.

It is a super-2 number, since 2×36644644644594² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (36644644644599) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32703664 + ... + 33805604.

It is an arithmetic number, because the mean of its divisors is an integer number (1776160804932).

Almost surely, 2^{36644644644594} is an apocalyptic number.

36644644644594 is an abundant number, since it is smaller than the sum of its proper divisors (48611073992142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36644644644594 is a wasteful number, since it uses less digits than its factorization.

36644644644594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215071 (or 1215064 counting only the distinct ones).

The product of its digits is 2866544640, while the sum is 69.

Adding to 36644644644594 its sum of digits (69), we get a palindrome (36644644644663).

The spelling of 36644644644594 in words is "thirty-six trillion, six hundred forty-four billion, six hundred forty-four million, six hundred forty-four thousand, five hundred ninety-four".