999999013894452 has 288 divisors, whose sum is σ = 3144447104198400. Its totient is φ = 263260428963840.

The previous prime is 999999013894451. The next prime is 999999013894457. The reversal of 999999013894452 is 254498310999999.

999999013894452 is a `hidden beast` number, since 9 + 9 + 9 + 99 + 90 + 1 + 389 + 4 + 4 + 52 = 666.

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 95 ways as a sum of consecutive naturals, for example, 5903132049 + ... + 5903301447.

It is an arithmetic number, because the mean of its divisors is an integer number (10918219111800).

Almost surely, 2^{999999013894452} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999999013894452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1572223552099200).

999999013894452 is an abundant number, since it is smaller than the sum of its proper divisors (2144448090303948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999999013894452 is a wasteful number, since it uses less digits than its factorization.

999999013894452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236903 (or 236898 counting only the distinct ones).

The product of its (nonzero) digits is 18366600960, while the sum is 90.

The spelling of 999999013894452 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, thirteen million, eight hundred ninety-four thousand, four hundred fifty-two".