26215843185641 has 2 divisors, whose sum is σ = 26215843185642. Its totient is φ = 26215843185640.

The previous prime is 26215843185613. The next prime is 26215843185647. The reversal of 26215843185641 is 14658134851262.

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., 16092653749225 + 10123189436416 = 4011565^2 + 3181696^2 .

It is a cyclic number.

It is not a de Polignac number, because 26215843185641 - 2³⁴ = 26198663316457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26215843185647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13107921592820 + 13107921592821.

It is an arithmetic number, because the mean of its divisors is an integer number (13107921592821).

Almost surely, 2^{26215843185641} is an apocalyptic number.

It is an amenable number.

26215843185641 is a deficient number, since it is larger than the sum of its proper divisors (1).

26215843185641 is an equidigital number, since it uses as much as digits as its factorization.

26215843185641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11059200, while the sum is 56.

The spelling of 26215843185641 in words is "twenty-six trillion, two hundred fifteen billion, eight hundred forty-three million, one hundred eighty-five thousand, six hundred forty-one".