26720641541911 has 2 divisors, whose sum is σ = 26720641541912. Its totient is φ = 26720641541910.

The previous prime is 26720641541873. The next prime is 26720641541927. The reversal of 26720641541911 is 11914514602762.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26720641541911 - 2¹⁵ = 26720641509143 is a prime.

It is a super-2 number, since 2×26720641541911² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26720641541981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13360320770955 + 13360320770956.

It is an arithmetic number, because the mean of its divisors is an integer number (13360320770956).

Almost surely, 2^{26720641541911} is an apocalyptic number.

26720641541911 is a deficient number, since it is larger than the sum of its proper divisors (1).

26720641541911 is an equidigital number, since it uses as much as digits as its factorization.

26720641541911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 26720641541911 in words is "twenty-six trillion, seven hundred twenty billion, six hundred forty-one million, five hundred forty-one thousand, nine hundred eleven".