165138087038 has 8 divisors (see below), whose sum is σ = 247741503480. Its totient is φ = 82557585880.

The previous prime is 165138087029. The next prime is 165138087043. The reversal of 165138087038 is 830780831561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×165138087038² (a number of 23 digits) contains 22 as substring.

It is a congruent 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, 5710793 + ... + 5739636.

It is an arithmetic number, because the mean of its divisors is an integer number (30967687935).

Almost surely, 2^165138087038 is an apocalyptic number.

165138087038 is a deficient number, since it is larger than the sum of its proper divisors (82603416442).

165138087038 is a wasteful number, since it uses less digits than its factorization.

165138087038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11457642.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 165138087038 in words is "one hundred sixty-five billion, one hundred thirty-eight million, eighty-seven thousand, thirty-eight".