26809573841 has 2 divisors, whose sum is σ = 26809573842. Its totient is φ = 26809573840.

The previous prime is 26809573807. The next prime is 26809573859. The reversal of 26809573841 is 14837590862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19287654400 + 7521919441 = 138880^2 + 86729^2 .

It is a cyclic number.

It is not a de Polignac number, because 26809573841 - 2²² = 26805379537 is a prime.

It is not a weakly prime, because it can be changed into another prime (26809573891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13404786920 + 13404786921.

It is an arithmetic number, because the mean of its divisors is an integer number (13404786921).

It is a 1-persistent number, because it is pandigital, but 2⋅26809573841 = 53619147682 is not.

Almost surely, 2^26809573841 is an apocalyptic number.

It is an amenable number.

26809573841 is a deficient number, since it is larger than the sum of its proper divisors (1).

26809573841 is an equidigital number, since it uses as much as digits as its factorization.

26809573841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 26809573841 in words is "twenty-six billion, eight hundred nine million, five hundred seventy-three thousand, eight hundred forty-one".