26098812225557 has 2 divisors, whose sum is σ = 26098812225558. Its totient is φ = 26098812225556.

The previous prime is 26098812225517. The next prime is 26098812225559. The reversal of 26098812225557 is 75552221889062.

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., 25241319557476 + 857492668081 = 5024074^2 + 926009^2 .

It is a cyclic number.

It is not a de Polignac number, because 26098812225557 - 2²⁶ = 26098745116693 is a prime.

It is a super-3 number, since 3×26098812225557³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 26098812225559, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26098812225557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26098812225559) 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, 13049406112778 + 13049406112779.

It is an arithmetic number, because the mean of its divisors is an integer number (13049406112779).

Almost surely, 2^{26098812225557} is an apocalyptic number.

It is an amenable number.

26098812225557 is a deficient number, since it is larger than the sum of its proper divisors (1).

26098812225557 is an equidigital number, since it uses as much as digits as its factorization.

26098812225557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384000, while the sum is 62.

The spelling of 26098812225557 in words is "twenty-six trillion, ninety-eight billion, eight hundred twelve million, two hundred twenty-five thousand, five hundred fifty-seven".