21543523214 has 8 divisors (see below), whose sum is σ = 32317602048. Its totient is φ = 10770989200.

The previous prime is 21543523193. The next prime is 21543523223. The reversal of 21543523214 is 41232534512.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350687 + ... + 407514.

It is an arithmetic number, because the mean of its divisors is an integer number (4039700256).

Almost surely, 2^21543523214 is an apocalyptic number.

21543523214 is a deficient number, since it is larger than the sum of its proper divisors (10774078834).

21543523214 is a wasteful number, since it uses less digits than its factorization.

21543523214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772410.

The product of its digits is 28800, while the sum is 32.

The spelling of 21543523214 in words is "twenty-one billion, five hundred forty-three million, five hundred twenty-three thousand, two hundred fourteen".