26994659668 has 12 divisors (see below), whose sum is σ = 47362098420. Its totient is φ = 13462631552.

The previous prime is 26994659641. The next prime is 26994659743. The reversal of 26994659668 is 86695649962.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7015402564 + 19979257104 = 83758^2 + 141348^2 .

It is a super-2 number, since 2×26994659668² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26994659597 and 26994659606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8672821 + ... + 8675932.

It is an arithmetic number, because the mean of its divisors is an integer number (3946841535).

Almost surely, 2^26994659668 is an apocalyptic number.

It is an amenable number.

26994659668 is a deficient number, since it is larger than the sum of its proper divisors (20367438752).

26994659668 is a wasteful number, since it uses less digits than its factorization.

26994659668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17349146 (or 17349144 counting only the distinct ones).

The product of its digits is 302330880, while the sum is 70.

The spelling of 26994659668 in words is "twenty-six billion, nine hundred ninety-four million, six hundred fifty-nine thousand, six hundred sixty-eight".