26685554453 has 4 divisors (see below), whose sum is σ = 26880339660. Its totient is φ = 26490769248.

The previous prime is 26685554443. The next prime is 26685554479. The reversal of 26685554453 is 35445558662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10032426244 + 16653128209 = 100162^2 + 129047^2 .

It is a cyclic number.

It is not a de Polignac number, because 26685554453 - 2²⁰ = 26684505877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26685554395 and 26685554404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26685554443) 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, 97392398 + ... + 97392671.

It is an arithmetic number, because the mean of its divisors is an integer number (6720084915).

Almost surely, 2^26685554453 is an apocalyptic number.

It is an amenable number.

26685554453 is a deficient number, since it is larger than the sum of its proper divisors (194785207).

26685554453 is a wasteful number, since it uses less digits than its factorization.

26685554453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194785206.

The product of its digits is 17280000, while the sum is 53.

The spelling of 26685554453 in words is "twenty-six billion, six hundred eighty-five million, five hundred fifty-four thousand, four hundred fifty-three".