165641314252 has 12 divisors (see below), whose sum is σ = 305128736920. Its totient is φ = 78461675136.

The previous prime is 165641314243. The next prime is 165641314273. The reversal of 165641314252 is 252413146561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1089745413 + ... + 1089745564.

Almost surely, 2^165641314252 is an apocalyptic number.

It is an amenable number.

165641314252 is a deficient number, since it is larger than the sum of its proper divisors (139487422668).

165641314252 is a wasteful number, since it uses less digits than its factorization.

165641314252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179491000 (or 2179490998 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The spelling of 165641314252 in words is "one hundred sixty-five billion, six hundred forty-one million, three hundred fourteen thousand, two hundred fifty-two".