64166006616 has 64 divisors (see below), whose sum is σ = 166394363520. Its totient is φ = 20605052160.

The previous prime is 64166006599. The next prime is 64166006627. The reversal of 64166006616 is 61660066146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350530 + ... + 501201.

It is an arithmetic number, because the mean of its divisors is an integer number (2599911930).

Almost surely, 2^64166006616 is an apocalyptic number.

It is an amenable number.

64166006616 is an abundant number, since it is smaller than the sum of its proper divisors (102228356904).

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

64166006616 is a wasteful number, since it uses less digits than its factorization.

64166006616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851856 (or 851852 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 64166006616 in words is "sixty-four billion, one hundred sixty-six million, six thousand, six hundred sixteen".