21624794343 has 16 divisors (see below), whose sum is σ = 32039097600. Its totient is φ = 14415465240.

The previous prime is 21624794339. The next prime is 21624794351. The reversal of 21624794343 is 34349742612.

21624794343 is a `hidden beast` number, since 216 + 2 + 4 + 7 + 94 + 343 = 666.

It is not a de Polignac number, because 21624794343 - 2² = 21624794339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21624794333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 548238 + ... + 586356.

It is an arithmetic number, because the mean of its divisors is an integer number (2002443600).

Almost surely, 2^21624794343 is an apocalyptic number.

21624794343 is a deficient number, since it is larger than the sum of its proper divisors (10414303257).

21624794343 is a wasteful number, since it uses less digits than its factorization.

21624794343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59139 (or 59133 counting only the distinct ones).

The product of its digits is 870912, while the sum is 45.

The spelling of 21624794343 in words is "twenty-one billion, six hundred twenty-four million, seven hundred ninety-four thousand, three hundred forty-three".