26406365443 has 4 divisors (see below), whose sum is σ = 26407904688. Its totient is φ = 26404826200.

The previous prime is 26406365429. The next prime is 26406365497. The reversal of 26406365443 is 34456360462.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26406365443 - 2²¹ = 26404268291 is a prime.

It is a super-2 number, since 2×26406365443² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26406365443.

It is not an unprimeable number, because it can be changed into a prime (26406365143) 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, 743596 + ... + 778297.

It is an arithmetic number, because the mean of its divisors is an integer number (6601976172).

Almost surely, 2^26406365443 is an apocalyptic number.

26406365443 is a deficient number, since it is larger than the sum of its proper divisors (1539245).

26406365443 is a wasteful number, since it uses less digits than its factorization.

26406365443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539244.

The product of its (nonzero) digits is 1244160, while the sum is 43.

The spelling of 26406365443 in words is "twenty-six billion, four hundred six million, three hundred sixty-five thousand, four hundred forty-three".