12013452040 has 32 divisors (see below), whose sum is σ = 27146297880. Its totient is φ = 4784753152.

The previous prime is 12013452019. The next prime is 12013452049. The reversal of 12013452040 is 4025431021.

It can be written as a sum of positive squares in 4 ways, for example, as 6555493156 + 5457958884 = 80966^2 + 73878^2 .

It is not an unprimeable number, because it can be changed into a prime (12013452049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635179 + ... + 653818.

Almost surely, 2^12013452040 is an apocalyptic number.

12013452040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12013452040 is an abundant number, since it is smaller than the sum of its proper divisors (15132845840).

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

12013452040 is a wasteful number, since it uses less digits than its factorization.

12013452040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289241 (or 1289237 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 12013452040 its reverse (4025431021), we get a palindrome (16038883061).

The spelling of 12013452040 in words is "twelve billion, thirteen million, four hundred fifty-two thousand, forty".