21824901163 has 18 divisors (see below), whose sum is σ = 24196445196. Its totient is φ = 19666194912.

The previous prime is 21824901151. The next prime is 21824901167. The reversal of 21824901163 is 36110942812.

It is not a de Polignac number, because 21824901163 - 2⁹ = 21824900651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21824901167) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12592845 + ... + 12594577.

Almost surely, 2^21824901163 is an apocalyptic number.

21824901163 is a deficient number, since it is larger than the sum of its proper divisors (2371544033).

21824901163 is an frugal number, since it uses more digits than its factorization.

21824901163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535 (or 1789 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 21824901163 in words is "twenty-one billion, eight hundred twenty-four million, nine hundred one thousand, one hundred sixty-three".