999727042816133 has 4 divisors (see below), whose sum is σ = 999727115835840. Its totient is φ = 999726969796428.

The previous prime is 999727042816097. The next prime is 999727042816141. The reversal of 999727042816133 is 331618240727999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 999727042816133 - 2⁶ = 999727042816069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999727042816633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9127463 + ... + 45637316.

It is an arithmetic number, because the mean of its divisors is an integer number (249931778958960).

It is a Poulet number, since it divides 2^{999727042816132}-1.

Almost surely, 2^{999727042816133} is an apocalyptic number.

999727042816133 is the 18254927-th octagonal number.

It is an amenable number.

999727042816133 is a deficient number, since it is larger than the sum of its proper divisors (73019707).

999727042816133 is a wasteful number, since it uses less digits than its factorization.

999727042816133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73019706.

The product of its (nonzero) digits is 246903552, while the sum is 71.

The spelling of 999727042816133 in words is "nine hundred ninety-nine trillion, seven hundred twenty-seven billion, forty-two million, eight hundred sixteen thousand, one hundred thirty-three".