216566133000 has 192 divisors, whose sum is σ = 786003004800. Its totient is φ = 49500796800.

The previous prime is 216566132999. The next prime is 216566133001. The reversal of 216566133000 is 331665612.

It is an interprime number because it is at equal distance from previous prime (216566132999) and next prime (216566133001).

It is not an unprimeable number, because it can be changed into a prime (216566133001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 589620 + ... + 883619.

It is an arithmetic number, because the mean of its divisors is an integer number (4093765650).

Almost surely, 2^216566133000 is an apocalyptic number.

216566133000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216566133000 is an abundant number, since it is smaller than the sum of its proper divisors (569436871800).

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

216566133000 is a wasteful number, since it uses less digits than its factorization.

216566133000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473277 (or 1473256 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

Adding to 216566133000 its reverse (331665612), we get a palindrome (216897798612).

The spelling of 216566133000 in words is "two hundred sixteen billion, five hundred sixty-six million, one hundred thirty-three thousand".