26403432673 has 2 divisors, whose sum is σ = 26403432674. Its totient is φ = 26403432672.

The previous prime is 26403432637. The next prime is 26403432677. The reversal of 26403432673 is 37623430462.

It is a happy number.

Together with previous prime (26403432637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18515861329 + 7887571344 = 136073^2 + 88812^2 .

It is a cyclic number.

It is not a de Polignac number, because 26403432673 - 2¹⁷ = 26403301601 is a prime.

It is not a weakly prime, because it can be changed into another prime (26403432677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13201716336 + 13201716337.

It is an arithmetic number, because the mean of its divisors is an integer number (13201716337).

Almost surely, 2^26403432673 is an apocalyptic number.

It is an amenable number.

26403432673 is a deficient number, since it is larger than the sum of its proper divisors (1).

26403432673 is an equidigital number, since it uses as much as digits as its factorization.

26403432673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 40.

The spelling of 26403432673 in words is "twenty-six billion, four hundred three million, four hundred thirty-two thousand, six hundred seventy-three".