36644065632 has 168 divisors, whose sum is σ = 108363132864. Its totient is φ = 12192332544.

The previous prime is 36644065609. The next prime is 36644065649. The reversal of 36644065632 is 23656044663.

36644065632 is a `hidden beast` number, since 3 + 6 + 6 + 4 + 4 + 0 + 6 + 5 + 632 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 17098353 + ... + 17100495.

It is an arithmetic number, because the mean of its divisors is an integer number (645018648).

Almost surely, 2^36644065632 is an apocalyptic number.

36644065632 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36644065632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54181566432).

36644065632 is an abundant number, since it is smaller than the sum of its proper divisors (71719067232).

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

36644065632 is an equidigital number, since it uses as much as digits as its factorization.

36644065632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904 (or 2881 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 45.

The spelling of 36644065632 in words is "thirty-six billion, six hundred forty-four million, sixty-five thousand, six hundred thirty-two".