26666631941 has 2 divisors, whose sum is σ = 26666631942. Its totient is φ = 26666631940.

The previous prime is 26666631889. The next prime is 26666631983. The reversal of 26666631941 is 14913666662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16896100225 + 9770531716 = 129985^2 + 98846^2 .

It is a cyclic number.

It is not a de Polignac number, because 26666631941 - 2³⁰ = 25592890117 is a prime.

It is a super-2 number, since 2×26666631941² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26666631941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26666631991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13333315970 + 13333315971.

It is an arithmetic number, because the mean of its divisors is an integer number (13333315971).

Almost surely, 2^26666631941 is an apocalyptic number.

It is an amenable number.

26666631941 is a deficient number, since it is larger than the sum of its proper divisors (1).

26666631941 is an equidigital number, since it uses as much as digits as its factorization.

26666631941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 50.

The spelling of 26666631941 in words is "twenty-six billion, six hundred sixty-six million, six hundred thirty-one thousand, nine hundred forty-one".