21713040603 has 8 divisors (see below), whose sum is σ = 32167467600. Its totient is φ = 14475360384.

The previous prime is 21713040599. The next prime is 21713040623. The reversal of 21713040603 is 30604031712.

21713040603 is a `hidden beast` number, since 2 + 1 + 7 + 13 + 0 + 40 + 603 = 666.

It is not a de Polignac number, because 21713040603 - 2² = 21713040599 is a prime.

It is a super-2 number, since 2×21713040603² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 804186689 = 21713040603 / (2 + 1 + 7 + 1 + 3 + 0 + 4 + 0 + 6 + 0 + 3).

It is not an unprimeable number, because it can be changed into a prime (21713040623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402093318 + ... + 402093371.

It is an arithmetic number, because the mean of its divisors is an integer number (4020933450).

Almost surely, 2^21713040603 is an apocalyptic number.

21713040603 is a deficient number, since it is larger than the sum of its proper divisors (10454426997).

21713040603 is an equidigital number, since it uses as much as digits as its factorization.

21713040603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804186698 (or 804186692 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The spelling of 21713040603 in words is "twenty-one billion, seven hundred thirteen million, forty thousand, six hundred three".