21342911539 has 8 divisors (see below), whose sum is σ = 21930799248. Its totient is φ = 20755605600.

The previous prime is 21342911531. The next prime is 21342911549. The reversal of 21342911539 is 93511924312.

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 21342911539 - 2³ = 21342911531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21342911531) 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, 70537 + ... + 218314.

It is an arithmetic number, because the mean of its divisors is an integer number (2741349906).

Almost surely, 2^21342911539 is an apocalyptic number.

21342911539 is a deficient number, since it is larger than the sum of its proper divisors (587887709).

21342911539 is a wasteful number, since it uses less digits than its factorization.

21342911539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290885.

The product of its digits is 58320, while the sum is 40.

The spelling of 21342911539 in words is "twenty-one billion, three hundred forty-two million, nine hundred eleven thousand, five hundred thirty-nine".