26501891711 has 2 divisors, whose sum is σ = 26501891712. Its totient is φ = 26501891710.

The previous prime is 26501891683. The next prime is 26501891807. The reversal of 26501891711 is 11719810562.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26501891711 - 2¹⁰ = 26501890687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26501891111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13250945855 + 13250945856.

It is an arithmetic number, because the mean of its divisors is an integer number (13250945856).

Almost surely, 2^26501891711 is an apocalyptic number.

26501891711 is a deficient number, since it is larger than the sum of its proper divisors (1).

26501891711 is an equidigital number, since it uses as much as digits as its factorization.

26501891711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 41.

The spelling of 26501891711 in words is "twenty-six billion, five hundred one million, eight hundred ninety-one thousand, seven hundred eleven".