11986985448 has 64 divisors (see below), whose sum is σ = 33306940800. Its totient is φ = 3994490880.

The previous prime is 11986985443. The next prime is 11986985471. The reversal of 11986985448 is 84458968911.

11986985448 is a `hidden beast` number, since 1 + 1 + 9 + 86 + 9 + 8 + 544 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (11986985441) 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, 1046440 + ... + 1057832.

It is an arithmetic number, because the mean of its divisors is an integer number (520420950).

Almost surely, 2^11986985448 is an apocalyptic number.

11986985448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11986985448 is an abundant number, since it is smaller than the sum of its proper divisors (21319955352).

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

11986985448 is a wasteful number, since it uses less digits than its factorization.

11986985448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16279 (or 16269 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 63.

The spelling of 11986985448 in words is "eleven billion, nine hundred eighty-six million, nine hundred eighty-five thousand, four hundred forty-eight".