163540923809344 has 21 divisors (see below), whose sum is σ = 324526723698747. Its totient is φ = 81770410751424.

The previous prime is 163540923809261. The next prime is 163540923809357. The reversal of 163540923809344 is 443908329045361.

It is a happy number.

The square root of 163540923809344 is 12788312.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 101507227 + ... + 103105765.

Almost surely, 2^{163540923809344} is an apocalyptic number.

163540923809344 is the 12788312-nd square number.

It is an amenable number.

163540923809344 is a deficient number, since it is larger than the sum of its proper divisors (160985799889403).

163540923809344 is an frugal number, since it uses more digits than its factorization.

163540923809344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3197090 (or 1598541 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 61.

The spelling of 163540923809344 in words is "one hundred sixty-three trillion, five hundred forty billion, nine hundred twenty-three million, eight hundred nine thousand, three hundred forty-four".