36664565604220 has 24 divisors (see below), whose sum is σ = 76995882692064. Its totient is φ = 14665770065856.

The previous prime is 36664565604157. The next prime is 36664565604229. The reversal of 36664565604220 is 2240656546663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36664565604229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2056257 + ... + 8806663.

It is an arithmetic number, because the mean of its divisors is an integer number (3208161778836).

Almost surely, 2^{36664565604220} is an apocalyptic number.

It is an amenable number.

36664565604220 is an abundant number, since it is smaller than the sum of its proper divisors (40331317087844).

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

36664565604220 is a wasteful number, since it uses less digits than its factorization.

36664565604220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7021989 (or 7021987 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 55.

The spelling of 36664565604220 in words is "thirty-six trillion, six hundred sixty-four billion, five hundred sixty-five million, six hundred four thousand, two hundred twenty".