64166006620 has 24 divisors (see below), whose sum is σ = 135352877184. Its totient is φ = 25551304896.

The previous prime is 64166006599. The next prime is 64166006627. The reversal of 64166006620 is 2660066146.

It is a self number, because there is not a number n which added to its sum of digits gives 64166006620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64166006627) 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, 7189039 + ... + 7197958.

It is an arithmetic number, because the mean of its divisors is an integer number (5639703216).

Almost surely, 2^64166006620 is an apocalyptic number.

It is an amenable number.

64166006620 is an abundant number, since it is smaller than the sum of its proper divisors (71186870564).

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

64166006620 is a wasteful number, since it uses less digits than its factorization.

64166006620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14387229 (or 14387227 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 64166006620 in words is "sixty-four billion, one hundred sixty-six million, six thousand, six hundred twenty".