21160634333 has 2 divisors, whose sum is σ = 21160634334. Its totient is φ = 21160634332.

The previous prime is 21160634329. The next prime is 21160634357. The reversal of 21160634333 is 33343606112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20823067204 + 337567129 = 144302^2 + 18373^2 .

It is a cyclic number.

It is not a de Polignac number, because 21160634333 - 2² = 21160634329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21160634333.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21160664333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10580317166 + 10580317167.

It is an arithmetic number, because the mean of its divisors is an integer number (10580317167).

Almost surely, 2^21160634333 is an apocalyptic number.

It is an amenable number.

21160634333 is a deficient number, since it is larger than the sum of its proper divisors (1).

21160634333 is an equidigital number, since it uses as much as digits as its factorization.

21160634333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 32.

The spelling of 21160634333 in words is "twenty-one billion, one hundred sixty million, six hundred thirty-four thousand, three hundred thirty-three".