161008856 has 16 divisors (see below), whose sum is σ = 308913000. Its totient is φ = 78632064.

The previous prime is 161008811. The next prime is 161008877. The reversal of 161008856 is 658800161.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 233681 + ... + 234368.

Almost surely, 2^161008856 is an apocalyptic number.

It is an amenable number.

161008856 is a deficient number, since it is larger than the sum of its proper divisors (147904144).

161008856 is a wasteful number, since it uses less digits than its factorization.

161008856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468098 (or 468094 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 161008856 is about 12688.9265109386. The cubic root of 161008856 is about 544.0221570416.

The spelling of 161008856 in words is "one hundred sixty-one million, eight thousand, eight hundred fifty-six".