21334052399 has 16 divisors (see below), whose sum is σ = 23396842656. Its totient is φ = 19292006400.

The previous prime is 21334052371. The next prime is 21334052401. The reversal of 21334052399 is 99325043312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21334052399 - 2²⁴ = 21317275183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21334052309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2585909 + ... + 2594145.

It is an arithmetic number, because the mean of its divisors is an integer number (1462302666).

Almost surely, 2^21334052399 is an apocalyptic number.

21334052399 is a deficient number, since it is larger than the sum of its proper divisors (2062790257).

21334052399 is a wasteful number, since it uses less digits than its factorization.

21334052399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9466.

The product of its (nonzero) digits is 174960, while the sum is 41.

The spelling of 21334052399 in words is "twenty-one billion, three hundred thirty-four million, fifty-two thousand, three hundred ninety-nine".