161008560 has 100 divisors (see below), whose sum is σ = 559229088. Its totient is φ = 42933888.

The previous prime is 161008559. The next prime is 161008567. The reversal of 161008560 is 65800161.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (161008567) 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 in 19 ways as a sum of consecutive naturals, for example, 5944 + ... + 18903.

Almost surely, 2^161008560 is an apocalyptic number.

161008560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161008560 is an abundant number, since it is smaller than the sum of its proper divisors (398220528).

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

161008560 is a wasteful number, since it uses less digits than its factorization.

161008560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24872 (or 24857 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 161008560 is about 12688.9148472200. The cubic root of 161008560 is about 544.0218236631.

The spelling of 161008560 in words is "one hundred sixty-one million, eight thousand, five hundred sixty".