4721991120 has 960 divisors, whose sum is σ = 21373632000. Its totient is φ = 936714240.

The previous prime is 4721991089. The next prime is 4721991143. The reversal of 4721991120 is 211991274.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 53056036 + ... + 53056124.

It is an arithmetic number, because the mean of its divisors is an integer number (22264200).

Almost surely, 2^4721991120 is an apocalyptic number.

4721991120 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 4721991120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10686816000).

4721991120 is an abundant number, since it is smaller than the sum of its proper divisors (16651640880).

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

4721991120 is a wasteful number, since it uses less digits than its factorization.

4721991120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 4721991120 is about 68716.7455573967. The cubic root of 4721991120 is about 1677.6771469288.

The spelling of 4721991120 in words is "four billion, seven hundred twenty-one million, nine hundred ninety-one thousand, one hundred twenty".