1999844954496 has 256 divisors, whose sum is σ = 5995488844800. Its totient is φ = 656170536960.

The previous prime is 1999844954473. The next prime is 1999844954501. The reversal of 1999844954496 is 6944594489991.

1999844954496 is a `hidden beast` number, since 1 + 9 + 9 + 9 + 84 + 4 + 95 + 449 + 6 = 666.

It is a super-2 number, since 2×1999844954496² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59429836 + ... + 59463476.

It is an arithmetic number, because the mean of its divisors is an integer number (23419878300).

Almost surely, 2^{1999844954496} is an apocalyptic number.

1999844954496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1999844954496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2997744422400).

1999844954496 is an abundant number, since it is smaller than the sum of its proper divisors (3995643890304).

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

1999844954496 is a wasteful number, since it uses less digits than its factorization.

1999844954496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33934 (or 33916 counting only the distinct ones).

The product of its digits is 3627970560, while the sum is 81.

The spelling of 1999844954496 in words is "one trillion, nine hundred ninety-nine billion, eight hundred forty-four million, nine hundred fifty-four thousand, four hundred ninety-six".