663240042367 has 8 divisors (see below), whose sum is σ = 758066688000. Its totient is φ = 568432913784.

The previous prime is 663240042349. The next prime is 663240042373. The reversal of 663240042367 is 763240042366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 663240042367 - 2¹¹ = 663240040319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663240052367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4806367 + ... + 4942432.

It is an arithmetic number, because the mean of its divisors is an integer number (94758336000).

Almost surely, 2^663240042367 is an apocalyptic number.

663240042367 is a deficient number, since it is larger than the sum of its proper divisors (94826645633).

663240042367 is an equidigital number, since it uses as much as digits as its factorization.

663240042367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9758525.

The product of its (nonzero) digits is 870912, while the sum is 43.

Subtracting 663240042367 from its reverse (763240042366), we obtain a palindrome (99999999999).

The spelling of 663240042367 in words is "six hundred sixty-three billion, two hundred forty million, forty-two thousand, three hundred sixty-seven".