21710260603 has 4 divisors (see below), whose sum is σ = 21855967200. Its totient is φ = 21564554008.

The previous prime is 21710260589. The next prime is 21710260609. The reversal of 21710260603 is 30606201712.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21710260603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21710260609) 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, 72853075 + ... + 72853372.

It is an arithmetic number, because the mean of its divisors is an integer number (5463991800).

Almost surely, 2^21710260603 is an apocalyptic number.

21710260603 is a deficient number, since it is larger than the sum of its proper divisors (145706597).

21710260603 is a wasteful number, since it uses less digits than its factorization.

21710260603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145706596.

The product of its (nonzero) digits is 3024, while the sum is 28.

The spelling of 21710260603 in words is "twenty-one billion, seven hundred ten million, two hundred sixty thousand, six hundred three".