244023986987 has 4 divisors (see below), whose sum is σ = 266207985816. Its totient is φ = 221839988160.

The previous prime is 244023986977. The next prime is 244023987019. The reversal of 244023986987 is 789689320442.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244023986987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244023986977) 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, 11091999398 + ... + 11091999419.

It is an arithmetic number, because the mean of its divisors is an integer number (66551996454).

Almost surely, 2^244023986987 is an apocalyptic number.

244023986987 is a deficient number, since it is larger than the sum of its proper divisors (22183998829).

244023986987 is a wasteful number, since it uses less digits than its factorization.

244023986987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22183998828.

The product of its (nonzero) digits is 41803776, while the sum is 62.

The spelling of 244023986987 in words is "two hundred forty-four billion, twenty-three million, nine hundred eighty-six thousand, nine hundred eighty-seven".