26348690789 has 2 divisors, whose sum is σ = 26348690790. Its totient is φ = 26348690788.

The previous prime is 26348690759. The next prime is 26348690801. The reversal of 26348690789 is 98709684362.

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., 18959913025 + 7388777764 = 137695^2 + 85958^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26348690789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26348690759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13174345394 + 13174345395.

It is an arithmetic number, because the mean of its divisors is an integer number (13174345395).

Almost surely, 2^26348690789 is an apocalyptic number.

It is an amenable number.

26348690789 is a deficient number, since it is larger than the sum of its proper divisors (1).

26348690789 is an equidigital number, since it uses as much as digits as its factorization.

26348690789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31352832, while the sum is 62.

The spelling of 26348690789 in words is "twenty-six billion, three hundred forty-eight million, six hundred ninety thousand, seven hundred eighty-nine".