26581842611 has 2 divisors, whose sum is σ = 26581842612. Its totient is φ = 26581842610.

The previous prime is 26581842559. The next prime is 26581842649. The reversal of 26581842611 is 11624818562.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26581842611 is a prime.

It is not a weakly prime, because it can be changed into another prime (26581842691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13290921305 + 13290921306.

It is an arithmetic number, because the mean of its divisors is an integer number (13290921306).

Almost surely, 2^26581842611 is an apocalyptic number.

26581842611 is a deficient number, since it is larger than the sum of its proper divisors (1).

26581842611 is an equidigital number, since it uses as much as digits as its factorization.

26581842611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 44.

The spelling of 26581842611 in words is "twenty-six billion, five hundred eighty-one million, eight hundred forty-two thousand, six hundred eleven".