189321575616 has 56 divisors (see below), whose sum is σ = 556570377840. Its totient is φ = 63107191296.

The previous prime is 189321575591. The next prime is 189321575621. The reversal of 189321575616 is 616575123981.

189321575616 is a `hidden beast` number, since 1 + 8 + 9 + 3 + 2 + 1 + 575 + 61 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 7 ways as a sum of consecutive naturals, for example, 54778821 + ... + 54782276.

Almost surely, 2^189321575616 is an apocalyptic number.

189321575616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189321575616 is an abundant number, since it is smaller than the sum of its proper divisors (367248802224).

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

189321575616 is a wasteful number, since it uses less digits than its factorization.

189321575616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109561118 (or 109561102 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The spelling of 189321575616 in words is "one hundred eighty-nine billion, three hundred twenty-one million, five hundred seventy-five thousand, six hundred sixteen".