12118778880 has 352 divisors, whose sum is σ = 42142391424. Its totient is φ = 2954625024.

The previous prime is 12118778869. The next prime is 12118778897. The reversal of 12118778880 is 8887781121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27355939 + ... + 27356381.

Almost surely, 2^12118778880 is an apocalyptic number.

12118778880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12118778880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21071195712).

12118778880 is an abundant number, since it is smaller than the sum of its proper divisors (30023612544).

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

12118778880 is a wasteful number, since it uses less digits than its factorization.

12118778880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 51.

The spelling of 12118778880 in words is "twelve billion, one hundred eighteen million, seven hundred seventy-eight thousand, eight hundred eighty".