12023532040 has 96 divisors (see below), whose sum is σ = 29490523200. Its totient is φ = 4409683200.

The previous prime is 12023532029. The next prime is 12023532043. The reversal of 12023532040 is 4023532021.

It is not an unprimeable number, because it can be changed into a prime (12023532043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1014871 + ... + 1026649.

It is an arithmetic number, because the mean of its divisors is an integer number (307192950).

Almost surely, 2^12023532040 is an apocalyptic number.

12023532040 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 12023532040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14745261600).

12023532040 is an abundant number, since it is smaller than the sum of its proper divisors (17466991160).

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

12023532040 is a wasteful number, since it uses less digits than its factorization.

12023532040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11967 (or 11950 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The spelling of 12023532040 in words is "twelve billion, twenty-three million, five hundred thirty-two thousand, forty".