5187211720 has 64 divisors (see below), whose sum is σ = 11853267840. Its totient is φ = 2042611200.

The previous prime is 5187211699. The next prime is 5187211721. The reversal of 5187211720 is 271127815.

It is not an unprimeable number, because it can be changed into a prime (5187211721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3387355 + ... + 3388885.

It is an arithmetic number, because the mean of its divisors is an integer number (185207310).

Almost surely, 2^5187211720 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 5187211720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5926633920).

5187211720 is an abundant number, since it is smaller than the sum of its proper divisors (6666056120).

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

5187211720 is a wasteful number, since it uses less digits than its factorization.

5187211720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806 (or 2802 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 34.

The square root of 5187211720 is about 72022.3001576595. The cubic root of 5187211720 is about 1731.0568258443.

The spelling of 5187211720 in words is "five billion, one hundred eighty-seven million, two hundred eleven thousand, seven hundred twenty".