26265244643 has 16 divisors (see below), whose sum is σ = 30896691840. Its totient is φ = 22069051200.

The previous prime is 26265244597. The next prime is 26265244661. The reversal of 26265244643 is 34644256262.

It is a cyclic number.

It is not a de Polignac number, because 26265244643 - 2²⁰ = 26264196067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26265244594 and 26265244603.

It is not an unprimeable number, because it can be changed into a prime (26265244043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1524005 + ... + 1541142.

It is an arithmetic number, because the mean of its divisors is an integer number (1931043240).

Almost surely, 2^26265244643 is an apocalyptic number.

26265244643 is a deficient number, since it is larger than the sum of its proper divisors (4631447197).

26265244643 is a wasteful number, since it uses less digits than its factorization.

26265244643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3065218.

The product of its digits is 1658880, while the sum is 44.

The spelling of 26265244643 in words is "twenty-six billion, two hundred sixty-five million, two hundred forty-four thousand, six hundred forty-three".