26928961609 has 8 divisors (see below), whose sum is σ = 29435458752. Its totient is φ = 24432199440.

The previous prime is 26928961597. The next prime is 26928961613. The reversal of 26928961609 is 90616982962.

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

It is not a de Polignac number, because 26928961609 - 2¹⁹ = 26928437321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26928961669) 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, 2427954 + ... + 2439019.

It is an arithmetic number, because the mean of its divisors is an integer number (3679432344).

Almost surely, 2^26928961609 is an apocalyptic number.

It is an amenable number.

26928961609 is a deficient number, since it is larger than the sum of its proper divisors (2506497143).

26928961609 is a wasteful number, since it uses less digits than its factorization.

26928961609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4867487.

The product of its (nonzero) digits is 5038848, while the sum is 58.

The spelling of 26928961609 in words is "twenty-six billion, nine hundred twenty-eight million, nine hundred sixty-one thousand, six hundred nine".