161567222958 has 48 divisors (see below), whose sum is σ = 352962158640. Its totient is φ = 53410451328.

The previous prime is 161567222951. The next prime is 161567223001. The reversal of 161567222958 is 859222765161.

161567222958 is a `hidden beast` number, since 1 + 6 + 1 + 567 + 2 + 2 + 29 + 58 = 666.

It is a super-2 number, since 2×161567222958² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161567222951) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2309916 + ... + 2378832.

It is an arithmetic number, because the mean of its divisors is an integer number (7353378305).

Almost surely, 2^161567222958 is an apocalyptic number.

161567222958 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

161567222958 is an abundant number, since it is smaller than the sum of its proper divisors (191394935682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161567222958 is a wasteful number, since it uses less digits than its factorization.

161567222958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70001 (or 69998 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The spelling of 161567222958 in words is "one hundred sixty-one billion, five hundred sixty-seven million, two hundred twenty-two thousand, nine hundred fifty-eight".