26420444707 has 4 divisors (see below), whose sum is σ = 26422957440. Its totient is φ = 26417931976.

The previous prime is 26420444683. The next prime is 26420444723. The reversal of 26420444707 is 70744402462.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26420444707 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 26420444707.

It is not an unprimeable number, because it can be changed into a prime (26420444777) 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, 1240528 + ... + 1261645.

It is an arithmetic number, because the mean of its divisors is an integer number (6605739360).

Almost surely, 2^26420444707 is an apocalyptic number.

26420444707 is a deficient number, since it is larger than the sum of its proper divisors (2512733).

26420444707 is a wasteful number, since it uses less digits than its factorization.

26420444707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512732.

The product of its (nonzero) digits is 301056, while the sum is 40.

The spelling of 26420444707 in words is "twenty-six billion, four hundred twenty million, four hundred forty-four thousand, seven hundred seven".