26185886453 has 4 divisors (see below), whose sum is σ = 26385778848. Its totient is φ = 25985994060.

The previous prime is 26185886417. The next prime is 26185886459. The reversal of 26185886453 is 35468858162.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35468858162 = 2 ⋅17734429081.

It is a cyclic number.

It is not a de Polignac number, because 26185886453 - 2²² = 26181692149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26185886459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99946001 + ... + 99946262.

It is an arithmetic number, because the mean of its divisors is an integer number (6596444712).

Almost surely, 2^26185886453 is an apocalyptic number.

It is an amenable number.

26185886453 is a deficient number, since it is larger than the sum of its proper divisors (199892395).

26185886453 is a wasteful number, since it uses less digits than its factorization.

26185886453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199892394.

The product of its digits is 11059200, while the sum is 56.

The spelling of 26185886453 in words is "twenty-six billion, one hundred eighty-five million, eight hundred eighty-six thousand, four hundred fifty-three".