189551010816 has 308 divisors, whose sum is σ = 586513383424. Its totient is φ = 61138022400.

The previous prime is 189551010793. The next prime is 189551010821. The reversal of 189551010816 is 618010155981.

189551010816 is a `hidden beast` number, since 1 + 8 + 9 + 551 + 0 + 10 + 81 + 6 = 666.

It is an unprimeable number.

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 27 ways as a sum of consecutive naturals, for example, 23137281 + ... + 23145471.

Almost surely, 2^189551010816 is an apocalyptic number.

189551010816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189551010816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293256691712).

189551010816 is an abundant number, since it is smaller than the sum of its proper divisors (396962372608).

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

189551010816 is an frugal number, since it uses more digits than its factorization.

189551010816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8260 (or 8227 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 45.

The spelling of 189551010816 in words is "one hundred eighty-nine billion, five hundred fifty-one million, ten thousand, eight hundred sixteen".