21833566089 has 16 divisors (see below), whose sum is σ = 30829276800. Its totient is φ = 13697084160.

The previous prime is 21833566067. The next prime is 21833566091. The reversal of 21833566089 is 98066533812.

It is a happy number.

It is not a de Polignac number, because 21833566089 - 2⁵ = 21833566057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (21833566009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281619 + ... + 350679.

It is an arithmetic number, because the mean of its divisors is an integer number (1926829800).

Almost surely, 2^21833566089 is an apocalyptic number.

It is an amenable number.

21833566089 is a deficient number, since it is larger than the sum of its proper divisors (8995710711).

21833566089 is a wasteful number, since it uses less digits than its factorization.

21833566089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75280.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 21833566089 in words is "twenty-one billion, eight hundred thirty-three million, five hundred sixty-six thousand, eighty-nine".