26447536481 has 2 divisors, whose sum is σ = 26447536482. Its totient is φ = 26447536480.

The previous prime is 26447536439. The next prime is 26447536537. The reversal of 26447536481 is 18463574462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25536040000 + 911496481 = 159800^2 + 30191^2 .

It is a cyclic number.

It is not a de Polignac number, because 26447536481 - 2³⁰ = 25373794657 is a prime.

It is a super-2 number, since 2×26447536481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26447536081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13223768240 + 13223768241.

It is an arithmetic number, because the mean of its divisors is an integer number (13223768241).

Almost surely, 2^26447536481 is an apocalyptic number.

It is an amenable number.

26447536481 is a deficient number, since it is larger than the sum of its proper divisors (1).

26447536481 is an equidigital number, since it uses as much as digits as its factorization.

26447536481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 50.

The spelling of 26447536481 in words is "twenty-six billion, four hundred forty-seven million, five hundred thirty-six thousand, four hundred eighty-one".