2163983463180 has 864 divisors, whose sum is σ = 8638356767040. Its totient is φ = 433087119360.

The previous prime is 2163983463133. The next prime is 2163983463193. The reversal of 2163983463180 is 813643893612.

2163983463180 is a `hidden beast` number, since 2 + 16 + 3 + 98 + 3 + 463 + 1 + 80 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1668452292 + ... + 1668453588.

It is an arithmetic number, because the mean of its divisors is an integer number (9998098110).

Almost surely, 2^{2163983463180} is an apocalyptic number.

2163983463180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2163983463180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4319178383520).

2163983463180 is an abundant number, since it is smaller than the sum of its proper divisors (6474373303860).

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

2163983463180 is a wasteful number, since it uses less digits than its factorization.

2163983463180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959 (or 1947 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 2163983463180 in words is "two trillion, one hundred sixty-three billion, nine hundred eighty-three million, four hundred sixty-three thousand, one hundred eighty".