163115749345 has 4 divisors (see below), whose sum is σ = 195738899220. Its totient is φ = 130492599472.

The previous prime is 163115749283. The next prime is 163115749393. The reversal of 163115749345 is 543947511361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543947511361 = 17 ⋅31996912433.

It can be written as a sum of positive squares in 2 ways, for example, as 108209418304 + 54906331041 = 328952^2 + 234321^2 .

It is a cyclic number.

It is not a de Polignac number, because 163115749345 - 2⁷ = 163115749217 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 16311574930 + ... + 16311574939.

It is an arithmetic number, because the mean of its divisors is an integer number (48934724805).

Almost surely, 2^163115749345 is an apocalyptic number.

It is an amenable number.

163115749345 is a deficient number, since it is larger than the sum of its proper divisors (32623149875).

163115749345 is an equidigital number, since it uses as much as digits as its factorization.

163115749345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32623149874.

The product of its digits is 1360800, while the sum is 49.

The spelling of 163115749345 in words is "one hundred sixty-three billion, one hundred fifteen million, seven hundred forty-nine thousand, three hundred forty-five".