26290028189 has 2 divisors, whose sum is σ = 26290028190. Its totient is φ = 26290028188.

The previous prime is 26290028117. The next prime is 26290028201. The reversal of 26290028189 is 98182009262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26290028164 + 25 = 162142^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 26290028189 - 2¹² = 26290024093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26290028489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13145014094 + 13145014095.

It is an arithmetic number, because the mean of its divisors is an integer number (13145014095).

Almost surely, 2^26290028189 is an apocalyptic number.

It is an amenable number.

26290028189 is a deficient number, since it is larger than the sum of its proper divisors (1).

26290028189 is an equidigital number, since it uses as much as digits as its factorization.

26290028189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 26290028189 in words is "twenty-six billion, two hundred ninety million, twenty-eight thousand, one hundred eighty-nine".