999999013894453 has 16 divisors (see below), whose sum is σ = 1058251396444416. Its totient is φ = 942979780068480.

The previous prime is 999999013894451. The next prime is 999999013894457. The reversal of 999999013894453 is 354498310999999.

999999013894453 is a nontrivial binomial coefficient, being equal to C(44721338, 2).

It is a cyclic number.

It is not a de Polignac number, because 999999013894453 - 2¹ = 999999013894451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999999013894451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1 + ... + 44721337.

It is an arithmetic number, because the mean of its divisors is an integer number (66140712277776).

Almost surely, 2^{999999013894453} is an apocalyptic number.

999999013894453 is the 44721337-th triangular number and also the 22360669-th hexagonal number.

999999013894453 is the 14907113-rd centered nonagonal number.

It is an amenable number.

999999013894453 is a deficient number, since it is larger than the sum of its proper divisors (58252382549963).

999999013894453 is a wasteful number, since it uses less digits than its factorization.

999999013894453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44735124.

The product of its (nonzero) digits is 27549901440, while the sum is 91.

The spelling of 999999013894453 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, thirteen million, eight hundred ninety-four thousand, four hundred fifty-three".