161332801200 has 90 divisors (see below), whose sum is σ = 559869647324. Its totient is φ = 43022079360.

The previous prime is 161332801193. The next prime is 161332801261. The reversal of 161332801200 is 2108233161.

It is a happy number.

161332801200 is a `hidden beast` number, since 1 + 613 + 3 + 28 + 0 + 1 + 20 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (90).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22403734 + ... + 22410933.

Almost surely, 2^161332801200 is an apocalyptic number.

161332801200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161332801200 is an abundant number, since it is smaller than the sum of its proper divisors (398536846124).

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

161332801200 is a wasteful number, since it uses less digits than its factorization.

161332801200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44814691 (or 44814677 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 161332801200 in words is "one hundred sixty-one billion, three hundred thirty-two million, eight hundred one thousand, two hundred".