21034924013 has 8 divisors (see below), whose sum is σ = 21158738016. Its totient is φ = 20911338000.

The previous prime is 21034923979. The next prime is 21034924051. The reversal of 21034924013 is 31042943012.

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 21034924013 - 2¹⁰ = 21034922989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21034924093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129863 + ... + 242763.

It is an arithmetic number, because the mean of its divisors is an integer number (2644842252).

Almost surely, 2^21034924013 is an apocalyptic number.

It is an amenable number.

21034924013 is a deficient number, since it is larger than the sum of its proper divisors (123814003).

21034924013 is a wasteful number, since it uses less digits than its factorization.

21034924013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113995.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 21034924013 in words is "twenty-one billion, thirty-four million, nine hundred twenty-four thousand, thirteen".