21713316132 has 24 divisors (see below), whose sum is σ = 50676536736. Its totient is φ = 7236038848.

The previous prime is 21713316127. The next prime is 21713316161. The reversal of 21713316132 is 23161331712.

It is a self number, because there is not a number n which added to its sum of digits gives 21713316132.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163938 + ... + 265145.

It is an arithmetic number, because the mean of its divisors is an integer number (2111522364).

Almost surely, 2^21713316132 is an apocalyptic number.

It is an amenable number.

21713316132 is an abundant number, since it is smaller than the sum of its proper divisors (28963220604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21713316132 is a wasteful number, since it uses less digits than its factorization.

21713316132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433307 (or 433305 counting only the distinct ones).

The product of its digits is 4536, while the sum is 30.

Adding to 21713316132 its reverse (23161331712), we get a palindrome (44874647844).

The spelling of 21713316132 in words is "twenty-one billion, seven hundred thirteen million, three hundred sixteen thousand, one hundred thirty-two".