26786967121 has 2 divisors, whose sum is σ = 26786967122. Its totient is φ = 26786967120.

The previous prime is 26786967113. The next prime is 26786967143. The reversal of 26786967121 is 12176968762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17476840000 + 9310127121 = 132200^2 + 96489^2 .

It is a cyclic number.

It is not a de Polignac number, because 26786967121 - 2³ = 26786967113 is a prime.

It is not a weakly prime, because it can be changed into another prime (26786967721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13393483560 + 13393483561.

It is an arithmetic number, because the mean of its divisors is an integer number (13393483561).

Almost surely, 2^26786967121 is an apocalyptic number.

It is an amenable number.

26786967121 is a deficient number, since it is larger than the sum of its proper divisors (1).

26786967121 is an equidigital number, since it uses as much as digits as its factorization.

26786967121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 55.

The spelling of 26786967121 in words is "twenty-six billion, seven hundred eighty-six million, nine hundred sixty-seven thousand, one hundred twenty-one".