26786728697 has 16 divisors (see below), whose sum is σ = 27804572928. Its totient is φ = 25787341440.

The previous prime is 26786728609. The next prime is 26786728769. The reversal of 26786728697 is 79682768762.

It is a cyclic number.

It is not a de Polignac number, because 26786728697 - 2¹⁴ = 26786712313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26786721697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7478447 + ... + 7482027.

It is an arithmetic number, because the mean of its divisors is an integer number (1737785808).

Almost surely, 2^26786728697 is an apocalyptic number.

It is an amenable number.

26786728697 is a deficient number, since it is larger than the sum of its proper divisors (1017844231).

26786728697 is a wasteful number, since it uses less digits than its factorization.

26786728697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6080.

The product of its digits is 170698752, while the sum is 68.

The spelling of 26786728697 in words is "twenty-six billion, seven hundred eighty-six million, seven hundred twenty-eight thousand, six hundred ninety-seven".