11565543078912 has 176 divisors, whose sum is σ = 31687119027072. Its totient is φ = 3747718840320.

The previous prime is 11565543078899. The next prime is 11565543078917. The reversal of 11565543078912 is 21987034556511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11565543078917) 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, 132147487 + ... + 132234977.

It is a 1-persistent number, because it is pandigital, but 2⋅11565543078912 = 23131086157824 is not.

Almost surely, 2^{11565543078912} is an apocalyptic number.

11565543078912 is a gapful number since it is divisible by the number (12) 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 11565543078912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15843559513536).

11565543078912 is an abundant number, since it is smaller than the sum of its proper divisors (20121575948160).

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

11565543078912 is a wasteful number, since it uses less digits than its factorization.

11565543078912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88714 (or 88696 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 57.

The spelling of 11565543078912 in words is "eleven trillion, five hundred sixty-five billion, five hundred forty-three million, seventy-eight thousand, nine hundred twelve".