663240042366 has 32 divisors (see below), whose sum is σ = 1447141932288. Its totient is φ = 200971727040.

The previous prime is 663240042349. The next prime is 663240042373.

663240042366 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1126810 + ... + 1611266.

It is an arithmetic number, because the mean of its divisors is an integer number (45223185384).

Almost surely, 2^663240042366 is an apocalyptic number.

663240042366 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

663240042366 is an abundant number, since it is smaller than the sum of its proper divisors (783901889922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663240042366 is a wasteful number, since it uses less digits than its factorization.

663240042366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505216.

The product of its (nonzero) digits is 746496, while the sum is 42.

It can be divided in two parts, 6632400 and 42366, that added together give a palindrome (6674766).

The spelling of 663240042366 in words is "six hundred sixty-three billion, two hundred forty million, forty-two thousand, three hundred sixty-six".