12778558141232 has 40 divisors (see below), whose sum is σ = 26674343618160. Its totient is φ = 5895276491520.

The previous prime is 12778558141229. The next prime is 12778558141343. The reversal of 12778558141232 is 23214185587721.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12634682 + ... + 13608537.

It is an arithmetic number, because the mean of its divisors is an integer number (666858590454).

Almost surely, 2^{12778558141232} is an apocalyptic number.

It is an amenable number.

12778558141232 is an abundant number, since it is smaller than the sum of its proper divisors (13895785476928).

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

12778558141232 is a wasteful number, since it uses less digits than its factorization.

12778558141232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26245581 (or 26245575 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 56.

The spelling of 12778558141232 in words is "twelve trillion, seven hundred seventy-eight billion, five hundred fifty-eight million, one hundred forty-one thousand, two hundred thirty-two".