189255463566 has 32 divisors (see below), whose sum is σ = 410039175840. Its totient is φ = 58232446272.

The previous prime is 189255463561. The next prime is 189255463603. The reversal of 189255463566 is 665364552981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189255463561) 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 15 ways as a sum of consecutive naturals, for example, 7165375 + ... + 7191738.

It is an arithmetic number, because the mean of its divisors is an integer number (12813724245).

Almost surely, 2^189255463566 is an apocalyptic number.

189255463566 is an abundant number, since it is smaller than the sum of its proper divisors (220783712274).

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

189255463566 is a wasteful number, since it uses less digits than its factorization.

189255463566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14357157 (or 14357131 counting only the distinct ones).

The product of its digits is 46656000, while the sum is 60.

The spelling of 189255463566 in words is "one hundred eighty-nine billion, two hundred fifty-five million, four hundred sixty-three thousand, five hundred sixty-six".