11572561999 has 2 divisors, whose sum is σ = 11572562000. Its totient is φ = 11572561998.

The previous prime is 11572561967. The next prime is 11572562063. The reversal of 11572561999 is 99916527511.

11572561999 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 is a cyclic number.

It is not a de Polignac number, because 11572561999 - 2⁵ = 11572561967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11572561909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5786280999 + 5786281000.

It is an arithmetic number, because the mean of its divisors is an integer number (5786281000).

Almost surely, 2^11572561999 is an apocalyptic number.

11572561999 is a deficient number, since it is larger than the sum of its proper divisors (1).

11572561999 is an equidigital number, since it uses as much as digits as its factorization.

11572561999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1530900, while the sum is 55.

The spelling of 11572561999 in words is "eleven billion, five hundred seventy-two million, five hundred sixty-one thousand, nine hundred ninety-nine".