26968568069 has 4 divisors (see below), whose sum is σ = 28554954444. Its totient is φ = 25382181696.

The previous prime is 26968568063. The next prime is 26968568111. The reversal of 26968568069 is 96086586962.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9633422500 + 17335145569 = 98150^2 + 131663^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26968568069 is a prime.

It is a super-2 number, since 2×26968568069² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26968567996 and 26968568014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26968568063) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 793193162 + ... + 793193195.

It is an arithmetic number, because the mean of its divisors is an integer number (7138738611).

Almost surely, 2^26968568069 is an apocalyptic number.

It is an amenable number.

26968568069 is a deficient number, since it is larger than the sum of its proper divisors (1586386375).

26968568069 is a wasteful number, since it uses less digits than its factorization.

26968568069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586386374.

The product of its (nonzero) digits is 67184640, while the sum is 65.

The spelling of 26968568069 in words is "twenty-six billion, nine hundred sixty-eight million, five hundred sixty-eight thousand, sixty-nine".