21934888269 has 12 divisors (see below), whose sum is σ = 34021459584. Its totient is φ = 12534221784.

The previous prime is 21934888259. The next prime is 21934888279. The reversal of 21934888269 is 96288843912.

It is an interprime number because it is at equal distance from previous prime (21934888259) and next prime (21934888279).

It is not a de Polignac number, because 21934888269 - 2⁸ = 21934888013 is a prime.

It is a super-2 number, since 2×21934888269² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21934888249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74608317 + ... + 74608610.

It is an arithmetic number, because the mean of its divisors is an integer number (2835121632).

Almost surely, 2^21934888269 is an apocalyptic number.

It is an amenable number.

21934888269 is a deficient number, since it is larger than the sum of its proper divisors (12086571315).

21934888269 is a wasteful number, since it uses less digits than its factorization.

21934888269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149216944 (or 149216937 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 60.

The spelling of 21934888269 in words is "twenty-one billion, nine hundred thirty-four million, eight hundred eighty-eight thousand, two hundred sixty-nine".