26671564441 has 8 divisors (see below), whose sum is σ = 27459407240. Its totient is φ = 25887247488.

The previous prime is 26671564429. The next prime is 26671564453. The reversal of 26671564441 is 14446517662.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (26671564429) and next prime (26671564453).

It can be written as a sum of positive squares in 4 ways, for example, as 20042348041 + 6629216400 = 141571^2 + 81420^2 .

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 26671564441 - 2³³ = 18081629849 is a prime.

It is a super-2 number, since 2×26671564441² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26671564391 and 26671564400.

It is not an unprimeable number, because it can be changed into a prime (26671534441) 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, 866106 + ... + 896371.

It is an arithmetic number, because the mean of its divisors is an integer number (3432425905).

Almost surely, 2^26671564441 is an apocalyptic number.

It is an amenable number.

26671564441 is a deficient number, since it is larger than the sum of its proper divisors (787842799).

26671564441 is a wasteful number, since it uses less digits than its factorization.

26671564441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762923.

The product of its digits is 967680, while the sum is 46.

The spelling of 26671564441 in words is "twenty-six billion, six hundred seventy-one million, five hundred sixty-four thousand, four hundred forty-one".