21534114443 has 8 divisors (see below), whose sum is σ = 22398452736. Its totient is φ = 20680381800.

The previous prime is 21534114419. The next prime is 21534114449. The reversal of 21534114443 is 34441143512.

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 21534114443 - 2¹² = 21534110347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21534114449) 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, 2647271 + ... + 2655392.

It is an arithmetic number, because the mean of its divisors is an integer number (2799806592).

Almost surely, 2^21534114443 is an apocalyptic number.

21534114443 is a deficient number, since it is larger than the sum of its proper divisors (864338293).

21534114443 is a wasteful number, since it uses less digits than its factorization.

21534114443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302825.

The product of its digits is 23040, while the sum is 32.

Adding to 21534114443 its reverse (34441143512), we get a palindrome (55975257955).

The spelling of 21534114443 in words is "twenty-one billion, five hundred thirty-four million, one hundred fourteen thousand, four hundred forty-three".