161043205524938 has 16 divisors (see below), whose sum is σ = 264367179107136. Its totient is φ = 72967586583840.

The previous prime is 161043205524919. The next prime is 161043205524947. The reversal of 161043205524938 is 839425502340161.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 161043205524938.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11693516606 + ... + 11693530377.

It is an arithmetic number, because the mean of its divisors is an integer number (16522948694196).

Almost surely, 2^{161043205524938} is an apocalyptic number.

161043205524938 is a deficient number, since it is larger than the sum of its proper divisors (103323973582198).

161043205524938 is a wasteful number, since it uses less digits than its factorization.

161043205524938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23387047309.

The product of its (nonzero) digits is 6220800, while the sum is 53.

The spelling of 161043205524938 in words is "one hundred sixty-one trillion, forty-three billion, two hundred five million, five hundred twenty-four thousand, nine hundred thirty-eight".