26158828909 has 8 divisors (see below), whose sum is σ = 26358725880. Its totient is φ = 25959062016.

The previous prime is 26158828889. The next prime is 26158828951. The reversal of 26158828909 is 90982885162.

It can be written as a sum of positive squares in 4 ways, for example, as 14667632100 + 11491196809 = 121110^2 + 107197^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26158828909 - 2¹³ = 26158820717 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 (26158828009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392287 + ... + 454099.

It is an arithmetic number, because the mean of its divisors is an integer number (3294840735).

Almost surely, 2^26158828909 is an apocalyptic number.

It is an amenable number.

26158828909 is a deficient number, since it is larger than the sum of its proper divisors (199896971).

26158828909 is a wasteful number, since it uses less digits than its factorization.

26158828909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65039.

The product of its (nonzero) digits is 4976640, while the sum is 58.

The spelling of 26158828909 in words is "twenty-six billion, one hundred fifty-eight million, eight hundred twenty-eight thousand, nine hundred nine".