36221405688 has 160 divisors (see below), whose sum is σ = 109679724000. Its totient is φ = 11101992192.

The previous prime is 36221405579. The next prime is 36221405789. The reversal of 36221405688 is 88650412263.

36221405688 is a `hidden beast` number, since 3 + 62 + 21 + 4 + 0 + 568 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2207338 + ... + 2223686.

It is an arithmetic number, because the mean of its divisors is an integer number (685498275).

Almost surely, 2^36221405688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36221405688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54839862000).

36221405688 is an abundant number, since it is smaller than the sum of its proper divisors (73458318312).

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

36221405688 is a wasteful number, since it uses less digits than its factorization.

36221405688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16643 (or 16630 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 36221405688 in words is "thirty-six billion, two hundred twenty-one million, four hundred five thousand, six hundred eighty-eight".