999959651289041 has 4 divisors (see below), whose sum is σ = 1034441018574900. Its totient is φ = 965478284003184.

The previous prime is 999959651288993. The next prime is 999959651289059. The reversal of 999959651289041 is 140982156959999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 775490218140625 + 224469433148416 = 27847625^2 + 14982304^2 .

It is a cyclic number.

It is not a de Polignac number, because 999959651289041 - 2²⁶ = 999959584180177 is a prime.

It is a super-3 number, since 3×999959651289041³ (a number of 46 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999959651289341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17240683642886 + ... + 17240683642943.

It is an arithmetic number, because the mean of its divisors is an integer number (258610254643725).

Almost surely, 2^{999959651289041} is an apocalyptic number.

It is an amenable number.

999959651289041 is a deficient number, since it is larger than the sum of its proper divisors (34481367285859).

999959651289041 is a wasteful number, since it uses less digits than its factorization.

999959651289041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34481367285858.

The product of its (nonzero) digits is 5101833600, while the sum is 86.

The spelling of 999959651289041 in words is "nine hundred ninety-nine trillion, nine hundred fifty-nine billion, six hundred fifty-one million, two hundred eighty-nine thousand, forty-one".