11885936640 has 272 divisors, whose sum is σ = 38729907648. Its totient is φ = 3112173568.

The previous prime is 11885936593. The next prime is 11885936653. The reversal of 11885936640 is 4663958811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105185224 + ... + 105185336.

Almost surely, 2^11885936640 is an apocalyptic number.

11885936640 is a gapful number since it is divisible by the number (10) 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 11885936640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19364953824).

11885936640 is an abundant number, since it is smaller than the sum of its proper divisors (26843971008).

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

11885936640 is an equidigital number, since it uses as much as digits as its factorization.

11885936640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 11885936640 in words is "eleven billion, eight hundred eighty-five million, nine hundred thirty-six thousand, six hundred forty".