5571716989 has 2 divisors, whose sum is σ = 5571716990. Its totient is φ = 5571716988.

The previous prime is 5571716981. The next prime is 5571716999. The reversal of 5571716989 is 9896171755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3167776089 + 2403940900 = 56283^2 + 49030^2 .

It is a cyclic number.

It is not a de Polignac number, because 5571716989 - 2³ = 5571716981 is a prime.

It is a super-2 number, since 2×5571716989² = 62088060411022452242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5571716981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2785858494 + 2785858495.

It is an arithmetic number, because the mean of its divisors is an integer number (2785858495).

Almost surely, 2^5571716989 is an apocalyptic number.

It is an amenable number.

5571716989 is a deficient number, since it is larger than the sum of its proper divisors (1).

5571716989 is an equidigital number, since it uses as much as digits as its factorization.

5571716989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4762800, while the sum is 58.

The square root of 5571716989 is about 74643.9347100620. The cubic root of 5571716989 is about 1772.8133612175.

The spelling of 5571716989 in words is "five billion, five hundred seventy-one million, seven hundred sixteen thousand, nine hundred eighty-nine".