26228890813 has 2 divisors, whose sum is σ = 26228890814. Its totient is φ = 26228890812.

The previous prime is 26228890801. The next prime is 26228890873. The reversal of 26228890813 is 31809882262.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16927831449 + 9301059364 = 130107^2 + 96442^2 .

It is a cyclic number.

It is not a de Polignac number, because 26228890813 - 2²⁹ = 25692019901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26228890873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13114445406 + 13114445407.

It is an arithmetic number, because the mean of its divisors is an integer number (13114445407).

Almost surely, 2^26228890813 is an apocalyptic number.

It is an amenable number.

26228890813 is a deficient number, since it is larger than the sum of its proper divisors (1).

26228890813 is an equidigital number, since it uses as much as digits as its factorization.

26228890813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 26228890813 in words is "twenty-six billion, two hundred twenty-eight million, eight hundred ninety thousand, eight hundred thirteen".