164066665664 has 56 divisors (see below), whose sum is σ = 356449658448. Its totient is φ = 74306442240.

The previous prime is 164066665663. The next prime is 164066665667. The reversal of 164066665664 is 466566660461.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (164066665663) 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, 225659 + ... + 615674.

Almost surely, 2^164066665664 is an apocalyptic number.

It is an amenable number.

164066665664 is an abundant number, since it is smaller than the sum of its proper divisors (192382992784).

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

164066665664 is a wasteful number, since it uses less digits than its factorization.

164066665664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841633 (or 841623 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 56.

The spelling of 164066665664 in words is "one hundred sixty-four billion, sixty-six million, six hundred sixty-five thousand, six hundred sixty-four".