165272046366 has 64 divisors (see below), whose sum is σ = 388154866176. Its totient is φ = 45930931200.

The previous prime is 165272046347. The next prime is 165272046367. The reversal of 165272046366 is 663640272561.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165272046367) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 245386 + ... + 625106.

It is an arithmetic number, because the mean of its divisors is an integer number (6064919784).

Almost surely, 2^165272046366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165272046366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194077433088).

165272046366 is an abundant number, since it is smaller than the sum of its proper divisors (222882819810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165272046366 is a wasteful number, since it uses less digits than its factorization.

165272046366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380017.

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 165272046366 in words is "one hundred sixty-five billion, two hundred seventy-two million, forty-six thousand, three hundred sixty-six".