663361165340444 has 12 divisors (see below), whose sum is σ = 1162156333577568. Its totient is φ = 331316498604000.

The previous prime is 663361165340327. The next prime is 663361165340477. The reversal of 663361165340444 is 444043561163366.

It is a happy number.

It is a super-3 number, since 3×663361165340444³ (a number of 45 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 663361165340444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91021012457 + ... + 91021019744.

It is an arithmetic number, because the mean of its divisors is an integer number (96846361131464).

Almost surely, 2^{663361165340444} is an apocalyptic number.

It is an amenable number.

663361165340444 is a deficient number, since it is larger than the sum of its proper divisors (498795168237124).

663361165340444 is a wasteful number, since it uses less digits than its factorization.

663361165340444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182042033116 (or 182042033114 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 56.

The spelling of 663361165340444 in words is "six hundred sixty-three trillion, three hundred sixty-one billion, one hundred sixty-five million, three hundred forty thousand, four hundred forty-four".