5481931680 has 144 divisors (see below), whose sum is σ = 19691773920. Its totient is φ = 1384902144.

The previous prime is 5481931613. The next prime is 5481931727. The reversal of 5481931680 is 861391845.

5481931680 is a `hidden beast` number, since 5 + 481 + 9 + 3 + 168 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 23 ways as a sum of consecutive naturals, for example, 72822 + ... + 127541.

It is an arithmetic number, because the mean of its divisors is an integer number (136748430).

Almost surely, 2^5481931680 is an apocalyptic number.

It is an amenable number.

5481931680 is an abundant number, since it is smaller than the sum of its proper divisors (14209842240).

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

5481931680 is a wasteful number, since it uses less digits than its factorization.

5481931680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200403 (or 200392 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 5481931680 is about 74040.0680712815. The cubic root of 5481931680 is about 1763.2390936740.

The spelling of 5481931680 in words is "five billion, four hundred eighty-one million, nine hundred thirty-one thousand, six hundred eighty".