26920816679 has 2 divisors, whose sum is σ = 26920816680. Its totient is φ = 26920816678.

The previous prime is 26920816589. The next prime is 26920816753. The reversal of 26920816679 is 97661802962.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26920816679 - 2³² = 22625849383 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26920812679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13460408339 + 13460408340.

It is an arithmetic number, because the mean of its divisors is an integer number (13460408340).

Almost surely, 2^26920816679 is an apocalyptic number.

26920816679 is a deficient number, since it is larger than the sum of its proper divisors (1).

26920816679 is an equidigital number, since it uses as much as digits as its factorization.

26920816679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 26920816679 in words is "twenty-six billion, nine hundred twenty million, eight hundred sixteen thousand, six hundred seventy-nine".