21146524343 has 8 divisors (see below), whose sum is σ = 24184742400. Its totient is φ = 18112627800.

The previous prime is 21146524327. The next prime is 21146524363. The reversal of 21146524343 is 34342564112.

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 21146524343 - 2⁴ = 21146524327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21146524363) 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, 1069883 + ... + 1089468.

It is an arithmetic number, because the mean of its divisors is an integer number (3023092800).

Almost surely, 2^21146524343 is an apocalyptic number.

21146524343 is a deficient number, since it is larger than the sum of its proper divisors (3038218057).

21146524343 is a wasteful number, since it uses less digits than its factorization.

21146524343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160757.

The product of its digits is 69120, while the sum is 35.

The spelling of 21146524343 in words is "twenty-one billion, one hundred forty-six million, five hundred twenty-four thousand, three hundred forty-three".