26397330187 has 2 divisors, whose sum is σ = 26397330188. Its totient is φ = 26397330186.

The previous prime is 26397330151. The next prime is 26397330203. The reversal of 26397330187 is 78103379362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26397330187 - 2¹⁵ = 26397297419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26397330187.

It is not a weakly prime, because it can be changed into another prime (26397330107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13198665093 + 13198665094.

It is an arithmetic number, because the mean of its divisors is an integer number (13198665094).

Almost surely, 2^26397330187 is an apocalyptic number.

26397330187 is a deficient number, since it is larger than the sum of its proper divisors (1).

26397330187 is an equidigital number, since it uses as much as digits as its factorization.

26397330187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 26397330187 in words is "twenty-six billion, three hundred ninety-seven million, three hundred thirty thousand, one hundred eighty-seven".