26168678785 has 4 divisors (see below), whose sum is σ = 31402414548. Its totient is φ = 20934943024.

The previous prime is 26168678779. The next prime is 26168678807. The reversal of 26168678785 is 58787686162.

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 19607840784 + 6560838001 = 140028^2 + 80999^2 .

It is a cyclic number.

It is not a de Polignac number, because 26168678785 - 2¹⁹ = 26168154497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2616867874 + ... + 2616867883.

It is an arithmetic number, because the mean of its divisors is an integer number (7850603637).

Almost surely, 2^26168678785 is an apocalyptic number.

It is an amenable number.

26168678785 is a deficient number, since it is larger than the sum of its proper divisors (5233735763).

26168678785 is an equidigital number, since it uses as much as digits as its factorization.

26168678785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233735762.

The product of its digits is 54190080, while the sum is 64.

The spelling of 26168678785 in words is "twenty-six billion, one hundred sixty-eight million, six hundred seventy-eight thousand, seven hundred eighty-five".