21622475339 has 2 divisors, whose sum is σ = 21622475340. Its totient is φ = 21622475338.

The previous prime is 21622475299. The next prime is 21622475341. The reversal of 21622475339 is 93357422612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21622475339 is a prime.

Together with 21622475341, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21622475339.

It is not a weakly prime, because it can be changed into another prime (21622474339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10811237669 + 10811237670.

It is an arithmetic number, because the mean of its divisors is an integer number (10811237670).

Almost surely, 2^21622475339 is an apocalyptic number.

21622475339 is a deficient number, since it is larger than the sum of its proper divisors (1).

21622475339 is an equidigital number, since it uses as much as digits as its factorization.

21622475339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 44.

The spelling of 21622475339 in words is "twenty-one billion, six hundred twenty-two million, four hundred seventy-five thousand, three hundred thirty-nine".