12440020451463 has 24 divisors (see below), whose sum is σ = 19632112330896. Its totient is φ = 7528000233600.

The previous prime is 12440020451437. The next prime is 12440020451497. The reversal of 12440020451463 is 36415402004421.

12440020451463 is a `hidden beast` number, since 1 + 2 + 4 + 400 + 204 + 5 + 1 + 46 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-12440020451463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440020451263) 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, 94985070 + ... + 95115947.

It is an arithmetic number, because the mean of its divisors is an integer number (818004680454).

Almost surely, 2^{12440020451463} is an apocalyptic number.

12440020451463 is a deficient number, since it is larger than the sum of its proper divisors (7192091879433).

12440020451463 is a wasteful number, since it uses less digits than its factorization.

12440020451463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190101695 (or 190101692 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 12440020451463 its reverse (36415402004421), we get a palindrome (48855422455884).

The spelling of 12440020451463 in words is "twelve trillion, four hundred forty billion, twenty million, four hundred fifty-one thousand, four hundred sixty-three".