21719910303 has 24 divisors (see below), whose sum is σ = 38613175328. Its totient is φ = 11456655552.

The previous prime is 21719910263. The next prime is 21719910313. The reversal of 21719910303 is 30301991712.

It is a happy number.

It is not a de Polignac number, because 21719910303 - 2⁹ = 21719909791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21719910313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13259200 + ... + 13260837.

Almost surely, 2^21719910303 is an apocalyptic number.

21719910303 is a deficient number, since it is larger than the sum of its proper divisors (16893265025).

21719910303 is a wasteful number, since it uses less digits than its factorization.

21719910303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26520063 (or 26520060 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The spelling of 21719910303 in words is "twenty-one billion, seven hundred nineteen million, nine hundred ten thousand, three hundred three".