21869169299 has 8 divisors (see below), whose sum is σ = 22180861440. Its totient is φ = 21557579400.

The previous prime is 21869169247. The next prime is 21869169307. The reversal of 21869169299 is 99296196812.

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

It is a cyclic number.

It is not a de Polignac number, because 21869169299 - 2²⁰ = 21868120723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21869169229) 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, 474332 + ... + 518390.

It is an arithmetic number, because the mean of its divisors is an integer number (2772607680).

Almost surely, 2^21869169299 is an apocalyptic number.

21869169299 is a deficient number, since it is larger than the sum of its proper divisors (311692141).

21869169299 is an equidigital number, since it uses as much as digits as its factorization.

21869169299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51121.

The product of its digits is 7558272, while the sum is 62.

The spelling of 21869169299 in words is "twenty-one billion, eight hundred sixty-nine million, one hundred sixty-nine thousand, two hundred ninety-nine".