21938583003 has 4 divisors (see below), whose sum is σ = 29251444008. Its totient is φ = 14625722000.

The previous prime is 21938582989. The next prime is 21938583013. The reversal of 21938583003 is 30038583912.

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 21938583003 - 2⁴ = 21938582987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21938583013) 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, 3656430498 + ... + 3656430503.

It is an arithmetic number, because the mean of its divisors is an integer number (7312861002).

Almost surely, 2^21938583003 is an apocalyptic number.

21938583003 is a deficient number, since it is larger than the sum of its proper divisors (7312861005).

21938583003 is an equidigital number, since it uses as much as digits as its factorization.

21938583003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7312861004.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 21938583003 in words is "twenty-one billion, nine hundred thirty-eight million, five hundred eighty-three thousand, three".