26413777685 has 16 divisors (see below), whose sum is σ = 32019793776. Its totient is φ = 20916016128.

The previous prime is 26413777681. The next prime is 26413777699. The reversal of 26413777685 is 58677731462.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 6947389201 + 19466388484 = 83351^2 + 139522^2 .

It is a cyclic number.

It is not a de Polignac number, because 26413777685 - 2² = 26413777681 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26413777685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26413777681) 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, 396827 + ... + 458583.

It is an arithmetic number, because the mean of its divisors is an integer number (2001237111).

Almost surely, 2^26413777685 is an apocalyptic number.

It is an amenable number.

26413777685 is a deficient number, since it is larger than the sum of its proper divisors (5606016091).

26413777685 is a wasteful number, since it uses less digits than its factorization.

26413777685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62632.

The product of its digits is 11854080, while the sum is 56.

The spelling of 26413777685 in words is "twenty-six billion, four hundred thirteen million, seven hundred seventy-seven thousand, six hundred eighty-five".