161822105258 has 32 divisors (see below), whose sum is σ = 265347306432. Its totient is φ = 73403568000.

The previous prime is 161822105231. The next prime is 161822105279. The reversal of 161822105258 is 852501228161.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38136485 + ... + 38140727.

It is an arithmetic number, because the mean of its divisors is an integer number (8292103326).

Almost surely, 2^161822105258 is an apocalyptic number.

161822105258 is a deficient number, since it is larger than the sum of its proper divisors (103525201174).

161822105258 is a wasteful number, since it uses less digits than its factorization.

161822105258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7430.

The product of its (nonzero) digits is 76800, while the sum is 41.

The spelling of 161822105258 in words is "one hundred sixty-one billion, eight hundred twenty-two million, one hundred five thousand, two hundred fifty-eight".