20006444267 has 4 divisors (see below), whose sum is σ = 20006762256. Its totient is φ = 20006126280.

The previous prime is 20006444243. The next prime is 20006444279. The reversal of 20006444267 is 76244460002.

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 20006444267 - 2¹² = 20006440171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20006444287) 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, 29423 + ... + 202184.

It is an arithmetic number, because the mean of its divisors is an integer number (5001690564).

Almost surely, 2^20006444267 is an apocalyptic number.

20006444267 is a deficient number, since it is larger than the sum of its proper divisors (317989).

20006444267 is an equidigital number, since it uses as much as digits as its factorization.

20006444267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317988.

The product of its (nonzero) digits is 64512, while the sum is 35.

The spelling of 20006444267 in words is "twenty billion, six million, four hundred forty-four thousand, two hundred sixty-seven".