12013445000 has 80 divisors (see below), whose sum is σ = 28427384700. Its totient is φ = 4757600000.

The previous prime is 12013444991. The next prime is 12013445033. The reversal of 12013445000 is 54431021.

It can be written as a sum of positive squares in 10 ways, for example, as 329132164 + 11684312836 = 18142^2 + 108094^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 493106 + ... + 516894.

Almost surely, 2^12013445000 is an apocalyptic number.

12013445000 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 12013445000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14213692350).

12013445000 is an abundant number, since it is smaller than the sum of its proper divisors (16413939700).

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

12013445000 is a wasteful number, since it uses less digits than its factorization.

12013445000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23916 (or 23897 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 12013445000 its reverse (54431021), we get a palindrome (12067876021).

The spelling of 12013445000 in words is "twelve billion, thirteen million, four hundred forty-five thousand".