161773480044 has 48 divisors (see below), whose sum is σ = 457541159040. Its totient is φ = 49022266320.

The previous prime is 161773479941. The next prime is 161773480079. The reversal of 161773480044 is 440084377161.

161773480044 is a `hidden beast` number, since 1 + 61 + 7 + 73 + 480 + 0 + 44 = 666.

161773480044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68085294 + ... + 68087669.

It is an arithmetic number, because the mean of its divisors is an integer number (9532107480).

Almost surely, 2^161773480044 is an apocalyptic number.

It is an amenable number.

161773480044 is an abundant number, since it is smaller than the sum of its proper divisors (295767678996).

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

161773480044 is a wasteful number, since it uses less digits than its factorization.

161773480044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136172987 (or 136172979 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 161773480044 in words is "one hundred sixty-one billion, seven hundred seventy-three million, four hundred eighty thousand, forty-four".