999575558099 has 4 divisors (see below), whose sum is σ = 1015962042720. Its totient is φ = 983189073480.

The previous prime is 999575558011. The next prime is 999575558197. The reversal of 999575558099 is 990855575999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990855575999 = 521 ⋅1901834119.

It is a cyclic number.

It is not a de Polignac number, because 999575558099 - 2⁸ = 999575557843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999575558299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8193242219 + ... + 8193242340.

It is an arithmetic number, because the mean of its divisors is an integer number (253990510680).

Almost surely, 2^999575558099 is an apocalyptic number.

999575558099 is a deficient number, since it is larger than the sum of its proper divisors (16386484621).

999575558099 is a wasteful number, since it uses less digits than its factorization.

999575558099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16386484620.

The product of its (nonzero) digits is 2066715000, while the sum is 80.

The spelling of 999575558099 in words is "nine hundred ninety-nine billion, five hundred seventy-five million, five hundred fifty-eight thousand, ninety-nine".