165732416816 has 20 divisors (see below), whose sum is σ = 321932036400. Its totient is φ = 82653181632.

The previous prime is 165732416813. The next prime is 165732416821. The reversal of 165732416816 is 618614237561.

It is not an unprimeable number, because it can be changed into a prime (165732416813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13307756 + ... + 13320203.

It is an arithmetic number, because the mean of its divisors is an integer number (16096601820).

Almost surely, 2^165732416816 is an apocalyptic number.

165732416816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165732416816 is a deficient number, since it is larger than the sum of its proper divisors (156199619584).

165732416816 is a wasteful number, since it uses less digits than its factorization.

165732416816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26628356 (or 26628350 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The spelling of 165732416816 in words is "one hundred sixty-five billion, seven hundred thirty-two million, four hundred sixteen thousand, eight hundred sixteen".