12401280008 has 32 divisors (see below), whose sum is σ = 25046275800. Its totient is φ = 5722472448.

The previous prime is 12401280007. The next prime is 12401280011. The reversal of 12401280008 is 80008210421.

It can be written as a sum of positive squares in 4 ways, for example, as 5588758564 + 6812521444 = 74758^2 + 82538^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (12401280007) 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, 663560 + ... + 681992.

Almost surely, 2^12401280008 is an apocalyptic number.

It is an amenable number.

12401280008 is an abundant number, since it is smaller than the sum of its proper divisors (12644995792).

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

12401280008 is a wasteful number, since it uses less digits than its factorization.

12401280008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24921 (or 24917 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

Adding to 12401280008 its reverse (80008210421), we get a palindrome (92409490429).

The spelling of 12401280008 in words is "twelve billion, four hundred one million, two hundred eighty thousand, eight".