12128880880 has 40 divisors (see below), whose sum is σ = 28209413232. Its totient is φ = 4849872384.

The previous prime is 12128880857. The next prime is 12128880923. The reversal of 12128880880 is 8808882121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12128880880.

It is a congruent number.

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, 220644 + ... + 270076.

Almost surely, 2^12128880880 is an apocalyptic number.

12128880880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12128880880 is an abundant number, since it is smaller than the sum of its proper divisors (16080532352).

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

12128880880 is a wasteful number, since it uses less digits than its factorization.

12128880880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52513 (or 52507 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 46.

The spelling of 12128880880 in words is "twelve billion, one hundred twenty-eight million, eight hundred eighty thousand, eight hundred eighty".