26579213491 has 2 divisors, whose sum is σ = 26579213492. Its totient is φ = 26579213490.

The previous prime is 26579213483. The next prime is 26579213519. The reversal of 26579213491 is 19431297562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26579213491 - 2³ = 26579213483 is a prime.

It is not a weakly prime, because it can be changed into another prime (26579213291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13289606745 + 13289606746.

It is an arithmetic number, because the mean of its divisors is an integer number (13289606746).

Almost surely, 2^26579213491 is an apocalyptic number.

26579213491 is a deficient number, since it is larger than the sum of its proper divisors (1).

26579213491 is an equidigital number, since it uses as much as digits as its factorization.

26579213491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The spelling of 26579213491 in words is "twenty-six billion, five hundred seventy-nine million, two hundred thirteen thousand, four hundred ninety-one".