26109872539 has 2 divisors, whose sum is σ = 26109872540. Its totient is φ = 26109872538.

The previous prime is 26109872531. The next prime is 26109872563. The reversal of 26109872539 is 93527890162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26109872539 - 2³ = 26109872531 is a prime.

It is not a weakly prime, because it can be changed into another prime (26109872531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13054936269 + 13054936270.

It is an arithmetic number, because the mean of its divisors is an integer number (13054936270).

Almost surely, 2^26109872539 is an apocalyptic number.

26109872539 is a deficient number, since it is larger than the sum of its proper divisors (1).

26109872539 is an equidigital number, since it uses as much as digits as its factorization.

26109872539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 26109872539 in words is "twenty-six billion, one hundred nine million, eight hundred seventy-two thousand, five hundred thirty-nine".