1663461476704 has 96 divisors (see below), whose sum is σ = 3403374408000. Its totient is φ = 799382298624.

The previous prime is 1663461476669. The next prime is 1663461476707. The reversal of 1663461476704 is 4076741643661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663461476707) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 234981837 + ... + 234988915.

It is an arithmetic number, because the mean of its divisors is an integer number (35451816750).

Almost surely, 2^{1663461476704} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1663461476704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1701687204000).

1663461476704 is an abundant number, since it is smaller than the sum of its proper divisors (1739912931296).

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

1663461476704 is a wasteful number, since it uses less digits than its factorization.

1663461476704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8240 (or 8232 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 55.

The spelling of 1663461476704 in words is "one trillion, six hundred sixty-three billion, four hundred sixty-one million, four hundred seventy-six thousand, seven hundred four".