26520413042491 has 2 divisors, whose sum is σ = 26520413042492. Its totient is φ = 26520413042490.

The previous prime is 26520413042429. The next prime is 26520413042503. The reversal of 26520413042491 is 19424031402562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26520413042491 - 2³⁷ = 26382974089019 is a prime.

It is not a weakly prime, because it can be changed into another prime (26520413042411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13260206521245 + 13260206521246.

It is an arithmetic number, because the mean of its divisors is an integer number (13260206521246).

Almost surely, 2^{26520413042491} is an apocalyptic number.

26520413042491 is a deficient number, since it is larger than the sum of its proper divisors (1).

26520413042491 is an equidigital number, since it uses as much as digits as its factorization.

26520413042491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 26520413042491 in words is "twenty-six trillion, five hundred twenty billion, four hundred thirteen million, forty-two thousand, four hundred ninety-one".