26456804069 has 8 divisors (see below), whose sum is σ = 26542111128. Its totient is φ = 26371537920.

The previous prime is 26456804027. The next prime is 26456804089. The reversal of 26456804069 is 96040865462.

It can be written as a sum of positive squares in 4 ways, for example, as 4272191044 + 22184613025 = 65362^2 + 148945^2 .

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 26456804069 - 2¹⁶ = 26456738533 is a prime.

It is a super-4 number, since 4×26456804069⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26456804089) 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, 1777679 + ... + 1792499.

It is an arithmetic number, because the mean of its divisors is an integer number (3317763891).

Almost surely, 2^26456804069 is an apocalyptic number.

It is an amenable number.

26456804069 is a deficient number, since it is larger than the sum of its proper divisors (85307059).

26456804069 is a wasteful number, since it uses less digits than its factorization.

26456804069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20455.

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 26456804069 in words is "twenty-six billion, four hundred fifty-six million, eight hundred four thousand, sixty-nine".