571622216989 has 2 divisors, whose sum is σ = 571622216990. Its totient is φ = 571622216988.

The previous prime is 571622216939. The next prime is 571622217041. The reversal of 571622216989 is 989612226175.

It is a happy number.

571622216989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490781511364 + 80840705625 = 700558^2 + 284325^2 .

It is a cyclic number.

It is not a de Polignac number, because 571622216989 - 2³¹ = 569474733341 is a prime.

It is a super-2 number, since 2×571622216989² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (571622216929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285811108494 + 285811108495.

It is an arithmetic number, because the mean of its divisors is an integer number (285811108495).

Almost surely, 2^571622216989 is an apocalyptic number.

It is an amenable number.

571622216989 is a deficient number, since it is larger than the sum of its proper divisors (1).

571622216989 is an equidigital number, since it uses as much as digits as its factorization.

571622216989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 58.

The spelling of 571622216989 in words is "five hundred seventy-one billion, six hundred twenty-two million, two hundred sixteen thousand, nine hundred eighty-nine".