21893828833 has 8 divisors (see below), whose sum is σ = 22608239616. Its totient is φ = 21179928000.

The previous prime is 21893828773. The next prime is 21893828837. The reversal of 21893828833 is 33882839812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21893828833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21893828837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39241 + ... + 212902.

It is an arithmetic number, because the mean of its divisors is an integer number (2826029952).

Almost surely, 2^21893828833 is an apocalyptic number.

It is an amenable number.

21893828833 is a deficient number, since it is larger than the sum of its proper divisors (714410783).

21893828833 is a wasteful number, since it uses less digits than its factorization.

21893828833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254975.

The product of its digits is 3981312, while the sum is 55.

The spelling of 21893828833 in words is "twenty-one billion, eight hundred ninety-three million, eight hundred twenty-eight thousand, eight hundred thirty-three".