36644918346 has 32 divisors (see below), whose sum is σ = 84241195200. Its totient is φ = 11793766320.

The previous prime is 36644918333. The next prime is 36644918399. The reversal of 36644918346 is 64381944663.

It is a happy number.

36644918346 is a `hidden beast` number, since 36 + 6 + 4 + 491 + 83 + 46 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 36644918292 and 36644918301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11698600 + ... + 11701731.

It is an arithmetic number, because the mean of its divisors is an integer number (2632537350).

Almost surely, 2^36644918346 is an apocalyptic number.

36644918346 is an abundant number, since it is smaller than the sum of its proper divisors (47596276854).

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

36644918346 is a wasteful number, since it uses less digits than its factorization.

36644918346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23400371 (or 23400365 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 54.

The spelling of 36644918346 in words is "thirty-six billion, six hundred forty-four million, nine hundred eighteen thousand, three hundred forty-six".