163260072709 has 4 divisors (see below), whose sum is σ = 163392054604. Its totient is φ = 163128090816.

The previous prime is 163260072697. The next prime is 163260072727. The reversal of 163260072709 is 907270062361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50126732100 + 113133340609 = 223890^2 + 336353^2 .

It is a cyclic number.

It is not a de Polignac number, because 163260072709 - 2²¹ = 163257975557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163260072799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65989092 + ... + 65991565.

It is an arithmetic number, because the mean of its divisors is an integer number (40848013651).

Almost surely, 2^163260072709 is an apocalyptic number.

It is an amenable number.

163260072709 is a deficient number, since it is larger than the sum of its proper divisors (131981895).

163260072709 is a wasteful number, since it uses less digits than its factorization.

163260072709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131981894.

The product of its (nonzero) digits is 190512, while the sum is 43.

The spelling of 163260072709 in words is "one hundred sixty-three billion, two hundred sixty million, seventy-two thousand, seven hundred nine".