161155160056 has 32 divisors (see below), whose sum is σ = 329654908080. Its totient is φ = 73248044800.

The previous prime is 161155160039. The next prime is 161155160113. The reversal of 161155160056 is 650061551161.

161155160056 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161155160056² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161155159997 and 161155160024.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1824300 + ... + 1910596.

Almost surely, 2^161155160056 is an apocalyptic number.

It is an amenable number.

161155160056 is an abundant number, since it is smaller than the sum of its proper divisors (168499748024).

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

161155160056 is a wasteful number, since it uses less digits than its factorization.

161155160056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107535 (or 107531 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 161155160056 in words is "one hundred sixty-one billion, one hundred fifty-five million, one hundred sixty thousand, fifty-six".