5481315840 has 1280 divisors, whose sum is σ = 25342377984. Its totient is φ = 973209600.

The previous prime is 5481315803. The next prime is 5481315841. The reversal of 5481315840 is 485131845.

It is a tau number, because it is divible by the number of its divisors (1280).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5481315841) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 176816625 + ... + 176816655.

Almost surely, 2^5481315840 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 5481315840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12671188992).

5481315840 is an abundant number, since it is smaller than the sum of its proper divisors (19861062144).

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

5481315840 is a wasteful number, since it uses less digits than its factorization.

5481315840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 5481315840 is about 74035.9091252346. The cubic root of 5481315840 is about 1763.1730637967.

The spelling of 5481315840 in words is "five billion, four hundred eighty-one million, three hundred fifteen thousand, eight hundred forty".