26244428019 has 4 divisors (see below), whose sum is σ = 34992570696. Its totient is φ = 17496285344.

The previous prime is 26244427991. The next prime is 26244428051. The reversal of 26244428019 is 91082444262.

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 26244428019 - 2¹⁶ = 26244362483 is a prime.

It is a super-2 number, since 2×26244428019² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26244428719) 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, 4374071334 + ... + 4374071339.

It is an arithmetic number, because the mean of its divisors is an integer number (8748142674).

Almost surely, 2^26244428019 is an apocalyptic number.

26244428019 is a deficient number, since it is larger than the sum of its proper divisors (8748142677).

26244428019 is an equidigital number, since it uses as much as digits as its factorization.

26244428019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8748142676.

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 26244428019 in words is "twenty-six billion, two hundred forty-four million, four hundred twenty-eight thousand, nineteen".