5721717387 has 16 divisors (see below), whose sum is σ = 8087592960. Its totient is φ = 3585708672.

The previous prime is 5721717377. The next prime is 5721717401. The reversal of 5721717387 is 7837171275.

It is not a de Polignac number, because 5721717387 - 2¹⁶ = 5721651851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5721717317) 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, 26187 + ... + 110132.

It is an arithmetic number, because the mean of its divisors is an integer number (505474560).

Almost surely, 2^5721717387 is an apocalyptic number.

5721717387 is a deficient number, since it is larger than the sum of its proper divisors (2365875573).

5721717387 is a wasteful number, since it uses less digits than its factorization.

5721717387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137162.

The product of its digits is 576240, while the sum is 48.

The square root of 5721717387 is about 75642.0345244627. The cubic root of 5721717387 is about 1788.5817742712.

The spelling of 5721717387 in words is "five billion, seven hundred twenty-one million, seven hundred seventeen thousand, three hundred eighty-seven".