161342220158 has 8 divisors (see below), whose sum is σ = 276586663152. Its totient is φ = 69146665776.

The previous prime is 161342220119. The next prime is 161342220167. The reversal of 161342220158 is 851022243161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 5762222135 + ... + 5762222162.

It is an arithmetic number, because the mean of its divisors is an integer number (34573332894).

Almost surely, 2^161342220158 is an apocalyptic number.

161342220158 is a deficient number, since it is larger than the sum of its proper divisors (115244442994).

161342220158 is a wasteful number, since it uses less digits than its factorization.

161342220158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11524444306.

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 161342220158 in words is "one hundred sixty-one billion, three hundred forty-two million, two hundred twenty thousand, one hundred fifty-eight".