12020004251440 has 40 divisors (see below), whose sum is σ = 28030940489808. Its totient is φ = 4793476005120.

The previous prime is 12020004251419. The next prime is 12020004251447. The reversal of 12020004251440 is 4415240002021.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (12020004251447) 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, 226937347 + ... + 226990306.

Almost surely, 2^{12020004251440} is an apocalyptic number.

12020004251440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020004251440 is an abundant number, since it is smaller than the sum of its proper divisors (16010936238368).

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

12020004251440 is a wasteful number, since it uses less digits than its factorization.

12020004251440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453927997 (or 453927991 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 12020004251440 its reverse (4415240002021), we get a palindrome (16435244253461).

The spelling of 12020004251440 in words is "twelve trillion, twenty billion, four million, two hundred fifty-one thousand, four hundred forty".