11988853632 has 128 divisors (see below), whose sum is σ = 40438675200. Its totient is φ = 3425379840.

The previous prime is 11988853619. The next prime is 11988853637. The reversal of 11988853632 is 23635888911.

11988853632 is a `hidden beast` number, since 11 + 98 + 8 + 8 + 536 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×11988853632² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11988853637) 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, 223594 + ... + 271977.

It is an arithmetic number, because the mean of its divisors is an integer number (315927150).

Almost surely, 2^11988853632 is an apocalyptic number.

11988853632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11988853632 is an abundant number, since it is smaller than the sum of its proper divisors (28449821568).

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

11988853632 is an equidigital number, since it uses as much as digits as its factorization.

11988853632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495601 (or 495583 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The spelling of 11988853632 in words is "eleven billion, nine hundred eighty-eight million, eight hundred fifty-three thousand, six hundred thirty-two".