189771254572 has 24 divisors (see below), whose sum is σ = 333728816960. Its totient is φ = 94421013120.

The previous prime is 189771254537. The next prime is 189771254591. The reversal of 189771254572 is 275452177981.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 793048 + ... + 1004224.

Almost surely, 2^189771254572 is an apocalyptic number.

It is an amenable number.

189771254572 is a deficient number, since it is larger than the sum of its proper divisors (143957562388).

189771254572 is a wasteful number, since it uses less digits than its factorization.

189771254572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212281 (or 212279 counting only the distinct ones).

The product of its digits is 9878400, while the sum is 58.

The spelling of 189771254572 in words is "one hundred eighty-nine billion, seven hundred seventy-one million, two hundred fifty-four thousand, five hundred seventy-two".