165138087082 has 32 divisors (see below), whose sum is σ = 252137615184. Its totient is φ = 81106790400.

The previous prime is 165138087071. The next prime is 165138087131. The reversal of 165138087082 is 280780831561.

It can be written as a sum of positive squares in 8 ways, for example, as 1314715081 + 163823372001 = 36259^2 + 404751^2 .

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 15 ways as a sum of consecutive naturals, for example, 18992328 + ... + 19001020.

Almost surely, 2^165138087082 is an apocalyptic number.

165138087082 is a deficient number, since it is larger than the sum of its proper divisors (86999528102).

165138087082 is a wasteful number, since it uses less digits than its factorization.

165138087082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9514.

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 165138087082 in words is "one hundred sixty-five billion, one hundred thirty-eight million, eighty-seven thousand, eighty-two".