26618080673 has 2 divisors, whose sum is σ = 26618080674. Its totient is φ = 26618080672.

The previous prime is 26618080669. The next prime is 26618080733. The reversal of 26618080673 is 37608081662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18672675904 + 7945404769 = 136648^2 + 89137^2 .

It is a cyclic number.

It is not a de Polignac number, because 26618080673 - 2² = 26618080669 is a prime.

It is a super-2 number, since 2×26618080673² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26618080373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13309040336 + 13309040337.

It is an arithmetic number, because the mean of its divisors is an integer number (13309040337).

Almost surely, 2^26618080673 is an apocalyptic number.

It is an amenable number.

26618080673 is a deficient number, since it is larger than the sum of its proper divisors (1).

26618080673 is an equidigital number, since it uses as much as digits as its factorization.

26618080673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 26618080673 in words is "twenty-six billion, six hundred eighteen million, eighty thousand, six hundred seventy-three".