11988075381256 has 32 divisors (see below), whose sum is σ = 24446360899800. Its totient is φ = 5478176102400.

The previous prime is 11988075381253. The next prime is 11988075381257. The reversal of 11988075381256 is 65218357088911.

It can be written as a sum of positive squares in 4 ways, for example, as 11364085976356 + 623989404900 = 3371066^2 + 789930^2 .

It is a super-2 number, since 2×11988075381256² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11988075381253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570632841 + ... + 570653848.

Almost surely, 2^{11988075381256} is an apocalyptic number.

It is an amenable number.

11988075381256 is an abundant number, since it is smaller than the sum of its proper divisors (12458285518544).

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

11988075381256 is a wasteful number, since it uses less digits than its factorization.

11988075381256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141286809 (or 1141286805 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 64.

The spelling of 11988075381256 in words is "eleven trillion, nine hundred eighty-eight billion, seventy-five million, three hundred eighty-one thousand, two hundred fifty-six".