11985145284 has 48 divisors (see below), whose sum is σ = 31994137728. Its totient is φ = 3420711168.

The previous prime is 11985145283. The next prime is 11985145349. The reversal of 11985145284 is 48254158911.

It is not an unprimeable number, because it can be changed into a prime (11985145283) 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, 5194 + ... + 154910.

It is an arithmetic number, because the mean of its divisors is an integer number (666544536).

Almost surely, 2^11985145284 is an apocalyptic number.

11985145284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11985145284 is an abundant number, since it is smaller than the sum of its proper divisors (20008992444).

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

11985145284 is a wasteful number, since it uses less digits than its factorization.

11985145284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150684 (or 150682 counting only the distinct ones).

The product of its digits is 460800, while the sum is 48.

The spelling of 11985145284 in words is "eleven billion, nine hundred eighty-five million, one hundred forty-five thousand, two hundred eighty-four".