26768865109 has 16 divisors (see below), whose sum is σ = 31349404800. Its totient is φ = 22377795840.

The previous prime is 26768865107. The next prime is 26768865113. The reversal of 26768865109 is 90156886762.

It is a cyclic number.

It is not a de Polignac number, because 26768865109 - 2¹ = 26768865107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26768865107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 976342 + ... + 1003384.

It is an arithmetic number, because the mean of its divisors is an integer number (1959337800).

Almost surely, 2^26768865109 is an apocalyptic number.

It is an amenable number.

26768865109 is a deficient number, since it is larger than the sum of its proper divisors (4580539691).

26768865109 is a wasteful number, since it uses less digits than its factorization.

26768865109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30540.

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 26768865109 in words is "twenty-six billion, seven hundred sixty-eight million, eight hundred sixty-five thousand, one hundred nine".