21062957263 has 2 divisors, whose sum is σ = 21062957264. Its totient is φ = 21062957262.

The previous prime is 21062957207. The next prime is 21062957303. The reversal of 21062957263 is 36275926012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21062957263 - 2⁹ = 21062956751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21062957063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10531478631 + 10531478632.

It is an arithmetic number, because the mean of its divisors is an integer number (10531478632).

Almost surely, 2^21062957263 is an apocalyptic number.

21062957263 is a deficient number, since it is larger than the sum of its proper divisors (1).

21062957263 is an equidigital number, since it uses as much as digits as its factorization.

21062957263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 21062957263 in words is "twenty-one billion, sixty-two million, nine hundred fifty-seven thousand, two hundred sixty-three".