165387199336 has 8 divisors (see below), whose sum is σ = 310100998770. Its totient is φ = 82693599664.

The previous prime is 165387199319. The next prime is 165387199339. The reversal of 165387199336 is 633991783561.

It can be written as a sum of positive squares in only one way, i.e., 160472348100 + 4914851236 = 400590^2 + 70106^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (165387199339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10336699951 + ... + 10336699966.

Almost surely, 2^165387199336 is an apocalyptic number.

It is an amenable number.

165387199336 is a deficient number, since it is larger than the sum of its proper divisors (144713799434).

165387199336 is a wasteful number, since it uses less digits than its factorization.

165387199336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20673399923 (or 20673399919 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 61.

The spelling of 165387199336 in words is "one hundred sixty-five billion, three hundred eighty-seven million, one hundred ninety-nine thousand, three hundred thirty-six".