165664704214 has 4 divisors (see below), whose sum is σ = 248497056324. Its totient is φ = 82832352106.

The previous prime is 165664704209. The next prime is 165664704241. The reversal of 165664704214 is 412407466561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41416176052 + ... + 41416176055.

It is an arithmetic number, because the mean of its divisors is an integer number (62124264081).

Almost surely, 2^165664704214 is an apocalyptic number.

165664704214 is a deficient number, since it is larger than the sum of its proper divisors (82832352110).

165664704214 is an equidigital number, since it uses as much as digits as its factorization.

165664704214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82832352109.

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 165664704214 in words is "one hundred sixty-five billion, six hundred sixty-four million, seven hundred four thousand, two hundred fourteen".