11999456538804 has 384 divisors, whose sum is σ = 36917657763840. Its totient is φ = 3299602521600.

The previous prime is 11999456538749. The next prime is 11999456538929. The reversal of 11999456538804 is 40883565499911.

11999456538804 is a `hidden beast` number, since 1 + 1 + 9 + 9 + 9 + 4 + 5 + 6 + 538 + 80 + 4 = 666.

11999456538804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1001534494 + ... + 1001546474.

It is an arithmetic number, because the mean of its divisors is an integer number (96139733760).

Almost surely, 2^{11999456538804} is an apocalyptic number.

11999456538804 is a gapful number since it is divisible by the number (14) 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 11999456538804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18458828881920).

11999456538804 is an abundant number, since it is smaller than the sum of its proper divisors (24918201225036).

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

11999456538804 is a wasteful number, since it uses less digits than its factorization.

11999456538804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12516 (or 12508 counting only the distinct ones).

The product of its (nonzero) digits is 335923200, while the sum is 72.

The spelling of 11999456538804 in words is "eleven trillion, nine hundred ninety-nine billion, four hundred fifty-six million, five hundred thirty-eight thousand, eight hundred four".