21833492293 has 4 divisors (see below), whose sum is σ = 22537798528. Its totient is φ = 21129186060.

The previous prime is 21833492281. The next prime is 21833492297. The reversal of 21833492293 is 39229433812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21833492293 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 (21833492297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352153071 + ... + 352153132.

It is an arithmetic number, because the mean of its divisors is an integer number (5634449632).

Almost surely, 2^21833492293 is an apocalyptic number.

It is an amenable number.

21833492293 is a deficient number, since it is larger than the sum of its proper divisors (704306235).

21833492293 is an equidigital number, since it uses as much as digits as its factorization.

21833492293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704306234.

The product of its digits is 559872, while the sum is 46.

The spelling of 21833492293 in words is "twenty-one billion, eight hundred thirty-three million, four hundred ninety-two thousand, two hundred ninety-three".