189717393015552 has 72 divisors (see below), whose sum is σ = 526878194782464. Its totient is φ = 60489603564544.

The previous prime is 189717393015547. The next prime is 189717393015571. The reversal of 189717393015552 is 255510393717981.

It is a super-2 number, since 2×189717393015552² (a number of 29 digits) contains 22 as substring.

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, 5370153108 + ... + 5370188435.

It is an arithmetic number, because the mean of its divisors is an integer number (7317752705312).

Almost surely, 2^{189717393015552} is an apocalyptic number.

189717393015552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189717393015552 is an abundant number, since it is smaller than the sum of its proper divisors (337160801766912).

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

189717393015552 is a wasteful number, since it uses less digits than its factorization.

189717393015552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10740341585 (or 10740341571 counting only the distinct ones).

The product of its (nonzero) digits is 71442000, while the sum is 66.

The spelling of 189717393015552 in words is "one hundred eighty-nine trillion, seven hundred seventeen billion, three hundred ninety-three million, fifteen thousand, five hundred fifty-two".