165664539308 has 12 divisors (see below), whose sum is σ = 289916499600. Its totient is φ = 82831253712.

The previous prime is 165664539281. The next prime is 165664539329. The reversal of 165664539308 is 803935466561.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205118 + ... + 611066.

It is an arithmetic number, because the mean of its divisors is an integer number (24159708300).

Almost surely, 2^165664539308 is an apocalyptic number.

It is an amenable number.

165664539308 is a deficient number, since it is larger than the sum of its proper divisors (124251960292).

165664539308 is a wasteful number, since it uses less digits than its factorization.

165664539308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507976 (or 507974 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 56.

The spelling of 165664539308 in words is "one hundred sixty-five billion, six hundred sixty-four million, five hundred thirty-nine thousand, three hundred eight".