26850115729 has 2 divisors, whose sum is σ = 26850115730. Its totient is φ = 26850115728.

The previous prime is 26850115717. The next prime is 26850115763. The reversal of 26850115729 is 92751105862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26850099600 + 16129 = 163860^2 + 127^2 .

It is a cyclic number.

It is not a de Polignac number, because 26850115729 - 2⁵ = 26850115697 is a prime.

It is not a weakly prime, because it can be changed into another prime (26850115709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13425057864 + 13425057865.

It is an arithmetic number, because the mean of its divisors is an integer number (13425057865).

Almost surely, 2^26850115729 is an apocalyptic number.

It is an amenable number.

26850115729 is a deficient number, since it is larger than the sum of its proper divisors (1).

26850115729 is an equidigital number, since it uses as much as digits as its factorization.

26850115729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 26850115729 in words is "twenty-six billion, eight hundred fifty million, one hundred fifteen thousand, seven hundred twenty-nine".