21968466695 has 48 divisors (see below), whose sum is σ = 31479321600. Its totient is φ = 14667960384.

The previous prime is 21968466679. The next prime is 21968466749. The reversal of 21968466695 is 59666486912.

It is not a de Polignac number, because 21968466695 - 2⁴ = 21968466679 is a prime.

It is a super-2 number, since 2×21968466695² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2286692 + ... + 2296278.

It is an arithmetic number, because the mean of its divisors is an integer number (655819200).

Almost surely, 2^21968466695 is an apocalyptic number.

21968466695 is a deficient number, since it is larger than the sum of its proper divisors (9510854905).

21968466695 is a wasteful number, since it uses less digits than its factorization.

21968466695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9852 (or 9845 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 62.

The spelling of 21968466695 in words is "twenty-one billion, nine hundred sixty-eight million, four hundred sixty-six thousand, six hundred ninety-five".