244191266987 has 4 divisors (see below), whose sum is σ = 244419697680. Its totient is φ = 243962836296.

The previous prime is 244191266983. The next prime is 244191266999. The reversal of 244191266987 is 789662191442.

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 244191266987 - 2² = 244191266983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244191266981) 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, 114213743 + ... + 114215880.

It is an arithmetic number, because the mean of its divisors is an integer number (61104924420).

Almost surely, 2^244191266987 is an apocalyptic number.

244191266987 is a deficient number, since it is larger than the sum of its proper divisors (228430693).

244191266987 is a wasteful number, since it uses less digits than its factorization.

244191266987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228430692.

The product of its digits is 10450944, while the sum is 59.

The spelling of 244191266987 in words is "two hundred forty-four billion, one hundred ninety-one million, two hundred sixty-six thousand, nine hundred eighty-seven".