999999000571 has 2 divisors, whose sum is σ = 999999000572. Its totient is φ = 999999000570.

The previous prime is 999999000551. The next prime is 999999000599. The reversal of 999999000571 is 175000999999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999999000571 - 2⁹ = 999999000059 is a prime.

It is a super-2 number, since 2×999999000571² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 999999000497 and 999999000506.

It is not a weakly prime, because it can be changed into another prime (999999000521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999500285 + 499999500286.

It is an arithmetic number, because the mean of its divisors is an integer number (499999500286).

Almost surely, 2^999999000571 is an apocalyptic number.

999999000571 is a deficient number, since it is larger than the sum of its proper divisors (1).

999999000571 is an equidigital number, since it uses as much as digits as its factorization.

999999000571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18600435, while the sum is 67.

The spelling of 999999000571 in words is "nine hundred ninety-nine billion, nine hundred ninety-nine million, five hundred seventy-one", and thus it is an aban number.