21062957339 has 2 divisors, whose sum is σ = 21062957340. Its totient is φ = 21062957338.

The previous prime is 21062957303. The next prime is 21062957359. The reversal of 21062957339 is 93375926012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21062957339 - 2¹⁶ = 21062891803 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21062957293 and 21062957302.

It is not a weakly prime, because it can be changed into another prime (21062957359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10531478669 + 10531478670.

It is an arithmetic number, because the mean of its divisors is an integer number (10531478670).

Almost surely, 2^21062957339 is an apocalyptic number.

21062957339 is a deficient number, since it is larger than the sum of its proper divisors (1).

21062957339 is an equidigital number, since it uses as much as digits as its factorization.

21062957339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 47.

The spelling of 21062957339 in words is "twenty-one billion, sixty-two million, nine hundred fifty-seven thousand, three hundred thirty-nine".