161544996 has 48 divisors (see below), whose sum is σ = 419522880. Its totient is φ = 53758080.

The previous prime is 161544983. The next prime is 161545001. The reversal of 161544996 is 699445161.

It is a happy number.

161544996 is a `hidden beast` number, since 1 + 6 + 154 + 499 + 6 = 666.

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 15 ways as a sum of consecutive naturals, for example, 104751 + ... + 106281.

It is an arithmetic number, because the mean of its divisors is an integer number (8740060).

Almost surely, 2^161544996 is an apocalyptic number.

It is an amenable number.

161544996 is an abundant number, since it is smaller than the sum of its proper divisors (257977884).

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

161544996 is a wasteful number, since it uses less digits than its factorization.

161544996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521 (or 2513 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 161544996 is about 12710.0352477875. The cubic root of 161544996 is about 544.6253306804.

The spelling of 161544996 in words is "one hundred sixty-one million, five hundred forty-four thousand, nine hundred ninety-six".