21316283193 has 8 divisors (see below), whose sum is σ = 28455034048. Its totient is φ = 14194193904.

The previous prime is 21316283173. The next prime is 21316283201. The reversal of 21316283193 is 39138261312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21316283193 - 2⁵ = 21316283161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21316283143) 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 7 ways as a sum of consecutive naturals, for example, 4162405 + ... + 4167522.

It is an arithmetic number, because the mean of its divisors is an integer number (3556879256).

Almost surely, 2^21316283193 is an apocalyptic number.

It is an amenable number.

21316283193 is a deficient number, since it is larger than the sum of its proper divisors (7138750855).

21316283193 is an equidigital number, since it uses as much as digits as its factorization.

21316283193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8330783.

The product of its digits is 46656, while the sum is 39.

The spelling of 21316283193 in words is "twenty-one billion, three hundred sixteen million, two hundred eighty-three thousand, one hundred ninety-three".