26090464409 has 4 divisors (see below), whose sum is σ = 26241276516. Its totient is φ = 25939652304.

The previous prime is 26090464357. The next prime is 26090464429. The reversal of 26090464409 is 90446409062.

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 14398800025 + 11691664384 = 119995^2 + 108128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26090464409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26090464409.

It is not an unprimeable number, because it can be changed into a prime (26090464429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75405794 + ... + 75406139.

It is an arithmetic number, because the mean of its divisors is an integer number (6560319129).

Almost surely, 2^26090464409 is an apocalyptic number.

It is an amenable number.

26090464409 is a deficient number, since it is larger than the sum of its proper divisors (150812107).

26090464409 is a wasteful number, since it uses less digits than its factorization.

26090464409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150812106.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 26090464409 in words is "twenty-six billion, ninety million, four hundred sixty-four thousand, four hundred nine".