26626445009 has 4 divisors (see below), whose sum is σ = 27023854704. Its totient is φ = 26229035316.

The previous prime is 26626445003. The next prime is 26626445047. The reversal of 26626445009 is 90054462662.

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.

It is a cyclic number.

It is not a de Polignac number, because 26626445009 - 2¹⁶ = 26626379473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26626445003) 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, 198704747 + ... + 198704880.

It is an arithmetic number, because the mean of its divisors is an integer number (6755963676).

Almost surely, 2^26626445009 is an apocalyptic number.

It is an amenable number.

26626445009 is a deficient number, since it is larger than the sum of its proper divisors (397409695).

26626445009 is an equidigital number, since it uses as much as digits as its factorization.

26626445009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397409694.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 26626445009 in words is "twenty-six billion, six hundred twenty-six million, four hundred forty-five thousand, nine".