5481945216 has 320 divisors, whose sum is σ = 18074612160. Its totient is φ = 1635379200.

The previous prime is 5481945199. The next prime is 5481945253. The reversal of 5481945216 is 6125491845.

5481945216 is a `hidden beast` number, since 548 + 1 + 94 + 5 + 2 + 16 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8097070 + ... + 8097746.

It is an arithmetic number, because the mean of its divisors is an integer number (56483163).

Almost surely, 2^5481945216 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 5481945216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9037306080).

5481945216 is an abundant number, since it is smaller than the sum of its proper divisors (12592666944).

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

5481945216 is a wasteful number, since it uses less digits than its factorization.

5481945216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 764 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 5481945216 is about 74040.1594811897. The cubic root of 5481945216 is about 1763.2405449376.

The spelling of 5481945216 in words is "five billion, four hundred eighty-one million, nine hundred forty-five thousand, two hundred sixteen".