26666466613 has 2 divisors, whose sum is σ = 26666466614. Its totient is φ = 26666466612.

The previous prime is 26666466601. The next prime is 26666466637. The reversal of 26666466613 is 31666466662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25600640004 + 1065826609 = 160002^2 + 32647^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26666466613 is a prime.

It is a super-2 number, since 2×26666466613² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26666466643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13333233306 + 13333233307.

It is an arithmetic number, because the mean of its divisors is an integer number (13333233307).

Almost surely, 2^26666466613 is an apocalyptic number.

It is an amenable number.

26666466613 is a deficient number, since it is larger than the sum of its proper divisors (1).

26666466613 is an equidigital number, since it uses as much as digits as its factorization.

26666466613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6718464, while the sum is 52.

The spelling of 26666466613 in words is "twenty-six billion, six hundred sixty-six million, four hundred sixty-six thousand, six hundred thirteen".