1663498468800 has 336 divisors, whose sum is σ = 6930364721920. Its totient is φ = 380228152320.

The previous prime is 1663498468771. The next prime is 1663498468817. The reversal of 1663498468800 is 88648943661.

1663498468800 is a `hidden beast` number, since 1 + 6 + 6 + 3 + 4 + 98 + 468 + 80 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2448094 + ... + 3052893.

Almost surely, 2^{1663498468800} is an apocalyptic number.

1663498468800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1663498468800 is an abundant number, since it is smaller than the sum of its proper divisors (5266866253120).

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

1663498468800 is a wasteful number, since it uses less digits than its factorization.

1663498468800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5501025 (or 5501004 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 63.

The spelling of 1663498468800 in words is "one trillion, six hundred sixty-three billion, four hundred ninety-eight million, four hundred sixty-eight thousand, eight hundred".