21923008703 has 4 divisors (see below), whose sum is σ = 22149019200. Its totient is φ = 21696998208.

The previous prime is 21923008663. The next prime is 21923008729. The reversal of 21923008703 is 30780032912.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21923008703 - 2¹⁶ = 21922943167 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 (21923004703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113005103 + ... + 113005296.

It is an arithmetic number, because the mean of its divisors is an integer number (5537254800).

Almost surely, 2^21923008703 is an apocalyptic number.

21923008703 is a deficient number, since it is larger than the sum of its proper divisors (226010497).

21923008703 is an equidigital number, since it uses as much as digits as its factorization.

21923008703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226010496.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 21923008703 in words is "twenty-one billion, nine hundred twenty-three million, eight thousand, seven hundred three".