5185481280 has 224 divisors, whose sum is σ = 18916229376. Its totient is φ = 1178935296.

The previous prime is 5185481269. The next prime is 5185481309. The reversal of 5185481280 is 821845815.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×5185481280² = 53778432210460876800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1321882 + ... + 1325798.

Almost surely, 2^5185481280 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 5185481280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9458114688).

5185481280 is an abundant number, since it is smaller than the sum of its proper divisors (13730748096).

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

5185481280 is a wasteful number, since it uses less digits than its factorization.

5185481280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4141 (or 4131 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 42.

The square root of 5185481280 is about 72010.2859319417. The cubic root of 5185481280 is about 1730.8643124547.

The spelling of 5185481280 in words is "five billion, one hundred eighty-five million, four hundred eighty-one thousand, two hundred eighty".