12801031138 has 16 divisors (see below), whose sum is σ = 21950495424. Its totient is φ = 5484688560.

The previous prime is 12801031129. The next prime is 12801031141. The reversal of 12801031138 is 83113010821.

12801031138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67248 + ... + 173563.

It is an arithmetic number, because the mean of its divisors is an integer number (1371905964).

Almost surely, 2^12801031138 is an apocalyptic number.

12801031138 is a deficient number, since it is larger than the sum of its proper divisors (9149464286).

12801031138 is a wasteful number, since it uses less digits than its factorization.

12801031138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244617.

The product of its (nonzero) digits is 1152, while the sum is 28.

Adding to 12801031138 its reverse (83113010821), we get a palindrome (95914041959).

The spelling of 12801031138 in words is "twelve billion, eight hundred one million, thirty-one thousand, one hundred thirty-eight".