161012056 has 8 divisors (see below), whose sum is σ = 301897620. Its totient is φ = 80506024.

The previous prime is 161012053. The next prime is 161012069. The reversal of 161012056 is 650210161.

161012056 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161012053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10063246 + ... + 10063261.

Almost surely, 2^161012056 is an apocalyptic number.

It is an amenable number.

161012056 is a deficient number, since it is larger than the sum of its proper divisors (140885564).

161012056 is a wasteful number, since it uses less digits than its factorization.

161012056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20126513 (or 20126509 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 161012056 is about 12689.0526045091. The cubic root of 161012056 is about 544.0257611071.

The spelling of 161012056 in words is "one hundred sixty-one million, twelve thousand, fifty-six".