26801770679 has 4 divisors (see below), whose sum is σ = 26809347480. Its totient is φ = 26794193880.

The previous prime is 26801770663. The next prime is 26801770693. The reversal of 26801770679 is 97607710862.

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

It is a cyclic number.

It is not a de Polignac number, because 26801770679 - 2⁴ = 26801770663 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 26801770679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26801770279) 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, 3783092 + ... + 3790169.

It is an arithmetic number, because the mean of its divisors is an integer number (6702336870).

Almost surely, 2^26801770679 is an apocalyptic number.

26801770679 is a deficient number, since it is larger than the sum of its proper divisors (7576801).

26801770679 is an equidigital number, since it uses as much as digits as its factorization.

26801770679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7576800.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 26801770679 in words is "twenty-six billion, eight hundred one million, seven hundred seventy thousand, six hundred seventy-nine".