1663546416512 has 32 divisors (see below), whose sum is σ = 3314637434880. Its totient is φ = 831637413376.

The previous prime is 1663546416463. The next prime is 1663546416533. The reversal of 1663546416512 is 2156146453661.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1663546416512² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271523 + ... + 1844130.

It is an arithmetic number, because the mean of its divisors is an integer number (103582419840).

Almost surely, 2^{1663546416512} is an apocalyptic number.

It is an amenable number.

1663546416512 is a deficient number, since it is larger than the sum of its proper divisors (1651091018368).

1663546416512 is an equidigital number, since it uses as much as digits as its factorization.

1663546416512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121810 (or 2121798 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 50.

The spelling of 1663546416512 in words is "one trillion, six hundred sixty-three billion, five hundred forty-six million, four hundred sixteen thousand, five hundred twelve".