189997039890048 has 256 divisors, whose sum is σ = 520698475664640. Its totient is φ = 61355853250560.

The previous prime is 189997039890011. The next prime is 189997039890103. The reversal of 189997039890048 is 840098930799981.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1243058686 + ... + 1243211522.

It is an arithmetic number, because the mean of its divisors is an integer number (2033978420565).

Almost surely, 2^{189997039890048} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189997039890048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260349237832320).

189997039890048 is an abundant number, since it is smaller than the sum of its proper divisors (330701435774592).

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

189997039890048 is a wasteful number, since it uses less digits than its factorization.

189997039890048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153715 (or 153703 counting only the distinct ones).

The product of its (nonzero) digits is 2539579392, while the sum is 84.

The spelling of 189997039890048 in words is "one hundred eighty-nine trillion, nine hundred ninety-seven billion, thirty-nine million, eight hundred ninety thousand, forty-eight".