26505090671 has 2 divisors, whose sum is σ = 26505090672. Its totient is φ = 26505090670.

The previous prime is 26505090659. The next prime is 26505090697. The reversal of 26505090671 is 17609050562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26505090671 - 2¹⁰ = 26505089647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26505090971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13252545335 + 13252545336.

It is an arithmetic number, because the mean of its divisors is an integer number (13252545336).

Almost surely, 2^26505090671 is an apocalyptic number.

26505090671 is a deficient number, since it is larger than the sum of its proper divisors (1).

26505090671 is an equidigital number, since it uses as much as digits as its factorization.

26505090671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 26505090671 in words is "twenty-six billion, five hundred five million, ninety thousand, six hundred seventy-one".