11988644052 has 192 divisors, whose sum is σ = 37398896640. Its totient is φ = 2893363200.

The previous prime is 11988644029. The next prime is 11988644071. The reversal of 11988644052 is 25044688911.

It is a junction number, because it is equal to n+sod(n) for n = 11988643992 and 11988644010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1236102 + ... + 1245762.

It is an arithmetic number, because the mean of its divisors is an integer number (194785920).

Almost surely, 2^11988644052 is an apocalyptic number.

11988644052 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 11988644052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18699448320).

11988644052 is an abundant number, since it is smaller than the sum of its proper divisors (25410252588).

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

11988644052 is a wasteful number, since it uses less digits than its factorization.

11988644052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9782 (or 9780 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 48.

The spelling of 11988644052 in words is "eleven billion, nine hundred eighty-eight million, six hundred forty-four thousand, fifty-two".