36664393920 has 672 divisors, whose sum is σ = 148636475904. Its totient is φ = 7493713920.

The previous prime is 36664393891. The next prime is 36664393937. The reversal of 36664393920 is 2939346663.

It is a tau number, because it is divible by the number of its divisors (672).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 54478704 + ... + 54479376.

It is an arithmetic number, because the mean of its divisors is an integer number (221185232).

Almost surely, 2^36664393920 is an apocalyptic number.

36664393920 is a gapful number since it is divisible by the number (30) 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 36664393920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74318237952).

36664393920 is an abundant number, since it is smaller than the sum of its proper divisors (111972081984).

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

36664393920 is a wasteful number, since it uses less digits than its factorization.

36664393920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789 (or 768 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 51.

The spelling of 36664393920 in words is "thirty-six billion, six hundred sixty-four million, three hundred ninety-three thousand, nine hundred twenty".