26517061603 has 2 divisors, whose sum is σ = 26517061604. Its totient is φ = 26517061602.

The previous prime is 26517061589. The next prime is 26517061607. The reversal of 26517061603 is 30616071562.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26517061603 is a prime.

It is not a weakly prime, because it can be changed into another prime (26517061607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13258530801 + 13258530802.

It is an arithmetic number, because the mean of its divisors is an integer number (13258530802).

Almost surely, 2^26517061603 is an apocalyptic number.

26517061603 is a deficient number, since it is larger than the sum of its proper divisors (1).

26517061603 is an equidigital number, since it uses as much as digits as its factorization.

26517061603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 26517061603 in words is "twenty-six billion, five hundred seventeen million, sixty-one thousand, six hundred three".