5711387891 has 8 divisors (see below), whose sum is σ = 6231190464. Its totient is φ = 5191682920.

The previous prime is 5711387887. The next prime is 5711387909. The reversal of 5711387891 is 1987831175.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5711387891 - 2² = 5711387887 is a prime.

It is a super-2 number, since 2×5711387891² = 65239903282922855762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5711387791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155960 + ... + 189066.

It is an arithmetic number, because the mean of its divisors is an integer number (778898808).

Almost surely, 2^5711387891 is an apocalyptic number.

5711387891 is a deficient number, since it is larger than the sum of its proper divisors (519802573).

5711387891 is a wasteful number, since it uses less digits than its factorization.

5711387891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48801.

The product of its digits is 423360, while the sum is 50.

The square root of 5711387891 is about 75573.7248718098. The cubic root of 5711387891 is about 1787.5048087373.

The spelling of 5711387891 in words is "five billion, seven hundred eleven million, three hundred eighty-seven thousand, eight hundred ninety-one".