26298474493 has 2 divisors, whose sum is σ = 26298474494. Its totient is φ = 26298474492.

The previous prime is 26298474481. The next prime is 26298474539. The reversal of 26298474493 is 39447489262.

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., 25084857924 + 1213616569 = 158382^2 + 34837^2 .

It is a cyclic number.

It is not a de Polignac number, because 26298474493 - 2¹³ = 26298466301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26298444493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13149237246 + 13149237247.

It is an arithmetic number, because the mean of its divisors is an integer number (13149237247).

Almost surely, 2^26298474493 is an apocalyptic number.

It is an amenable number.

26298474493 is a deficient number, since it is larger than the sum of its proper divisors (1).

26298474493 is an equidigital number, since it uses as much as digits as its factorization.

26298474493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20901888, while the sum is 58.

The spelling of 26298474493 in words is "twenty-six billion, two hundred ninety-eight million, four hundred seventy-four thousand, four hundred ninety-three".