26389440001 has 4 divisors (see below), whose sum is σ = 27003147952. Its totient is φ = 25775732052.

The previous prime is 26389439987. The next prime is 26389440041. The reversal of 26389440001 is 10004498362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10004498362 = 2 ⋅5002249181.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26389440001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26389440041) 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, 306853911 + ... + 306853996.

It is an arithmetic number, because the mean of its divisors is an integer number (6750786988).

Almost surely, 2^26389440001 is an apocalyptic number.

It is an amenable number.

26389440001 is a deficient number, since it is larger than the sum of its proper divisors (613707951).

26389440001 is an equidigital number, since it uses as much as digits as its factorization.

26389440001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613707950.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 26389440001 in words is "twenty-six billion, three hundred eighty-nine million, four hundred forty thousand, one".