26806181029 has 2 divisors, whose sum is σ = 26806181030. Its totient is φ = 26806181028.

The previous prime is 26806180993. The next prime is 26806181041. The reversal of 26806181029 is 92018160862.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26629344225 + 176836804 = 163185^2 + 13298^2 .

It is a cyclic number.

It is not a de Polignac number, because 26806181029 - 2⁷ = 26806180901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26806181629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13403090514 + 13403090515.

It is an arithmetic number, because the mean of its divisors is an integer number (13403090515).

Almost surely, 2^26806181029 is an apocalyptic number.

It is an amenable number.

26806181029 is a deficient number, since it is larger than the sum of its proper divisors (1).

26806181029 is an equidigital number, since it uses as much as digits as its factorization.

26806181029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 26806181029 in words is "twenty-six billion, eight hundred six million, one hundred eighty-one thousand, twenty-nine".