12880746918 has 96 divisors (see below), whose sum is σ = 30703816416. Its totient is φ = 3878544384.

The previous prime is 12880746889. The next prime is 12880746953. The reversal of 12880746918 is 81964708821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2458830 + ... + 2464062.

It is an arithmetic number, because the mean of its divisors is an integer number (319831421).

Almost surely, 2^12880746918 is an apocalyptic number.

12880746918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12880746918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15351908208).

12880746918 is an abundant number, since it is smaller than the sum of its proper divisors (17823069498).

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

12880746918 is a wasteful number, since it uses less digits than its factorization.

12880746918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5478 (or 5475 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The spelling of 12880746918 in words is "twelve billion, eight hundred eighty million, seven hundred forty-six thousand, nine hundred eighteen".