26485163409 has 4 divisors (see below), whose sum is σ = 35313551216. Its totient is φ = 17656775604.

The previous prime is 26485163387. The next prime is 26485163437. The reversal of 26485163409 is 90436158462.

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.

It is not a de Polignac number, because 26485163409 - 2⁵ = 26485163377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26485163479) 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, 4414193899 + ... + 4414193904.

It is an arithmetic number, because the mean of its divisors is an integer number (8828387804).

Almost surely, 2^26485163409 is an apocalyptic number.

It is an amenable number.

26485163409 is a deficient number, since it is larger than the sum of its proper divisors (8828387807).

26485163409 is an equidigital number, since it uses as much as digits as its factorization.

26485163409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8828387806.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 26485163409 in words is "twenty-six billion, four hundred eighty-five million, one hundred sixty-three thousand, four hundred nine".