12890450008 has 16 divisors (see below), whose sum is σ = 24949258560. Its totient is φ = 6237314400.

The previous prime is 12890449993. The next prime is 12890450021. The reversal of 12890450008 is 80005409821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25988563 + ... + 25989058.

It is an arithmetic number, because the mean of its divisors is an integer number (1559328660).

Almost surely, 2^12890450008 is an apocalyptic number.

It is an amenable number.

12890450008 is a deficient number, since it is larger than the sum of its proper divisors (12058808552).

12890450008 is a wasteful number, since it uses less digits than its factorization.

12890450008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51977658 (or 51977654 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

Adding to 12890450008 its reverse (80005409821), we get a palindrome (92895859829).

The spelling of 12890450008 in words is "twelve billion, eight hundred ninety million, four hundred fifty thousand, eight".