12880781018 has 24 divisors (see below), whose sum is σ = 22540108500. Its totient is φ = 5504502528.

The previous prime is 12880781003. The next prime is 12880781033. The reversal of 12880781018 is 81018708821.

It is an interprime number because it is at equal distance from previous prime (12880781003) and next prime (12880781033).

It can be written as a sum of positive squares in 2 ways, for example, as 12718651729 + 162129289 = 112777^2 + 12733^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12880781018.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154103 + ... + 222506.

Almost surely, 2^12880781018 is an apocalyptic number.

12880781018 is a deficient number, since it is larger than the sum of its proper divisors (9659327482).

12880781018 is a wasteful number, since it uses less digits than its factorization.

12880781018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376974 (or 376967 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 44.

The spelling of 12880781018 in words is "twelve billion, eight hundred eighty million, seven hundred eighty-one thousand, eighteen".