21373282339 has 2 divisors, whose sum is σ = 21373282340. Its totient is φ = 21373282338.

The previous prime is 21373282327. The next prime is 21373282369. The reversal of 21373282339 is 93328237312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21373282339 - 2⁷ = 21373282211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21373282295 and 21373282304.

It is not a weakly prime, because it can be changed into another prime (21373282369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10686641169 + 10686641170.

It is an arithmetic number, because the mean of its divisors is an integer number (10686641170).

Almost surely, 2^21373282339 is an apocalyptic number.

21373282339 is a deficient number, since it is larger than the sum of its proper divisors (1).

21373282339 is an equidigital number, since it uses as much as digits as its factorization.

21373282339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 43.

The spelling of 21373282339 in words is "twenty-one billion, three hundred seventy-three million, two hundred eighty-two thousand, three hundred thirty-nine".