4881121280 has 252 divisors, whose sum is σ = 14344512840. Its totient is φ = 1585446912.

The previous prime is 4881121279. The next prime is 4881121291. The reversal of 4881121280 is 821211884.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 4881121280.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 256901111 + ... + 256901129.

It is an arithmetic number, because the mean of its divisors is an integer number (56922670).

Almost surely, 2^4881121280 is an apocalyptic number.

4881121280 is a gapful number since it is divisible by the number (40) 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 4881121280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7172256420).

4881121280 is an abundant number, since it is smaller than the sum of its proper divisors (9463391560).

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

4881121280 is an frugal number, since it uses more digits than its factorization.

4881121280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 33 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 35.

The square root of 4881121280 is about 69865.0218635907. The cubic root of 4881121280 is about 1696.3151188529.

The spelling of 4881121280 in words is "four billion, eight hundred eighty-one million, one hundred twenty-one thousand, two hundred eighty".