12108132780 has 96 divisors (see below), whose sum is σ = 35647093440. Its totient is φ = 3066362880.

The previous prime is 12108132739. The next prime is 12108132787. The reversal of 12108132780 is 8723180121.

It is a super-2 number, since 2×12108132780² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12108132787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49102 + ... + 163178.

It is an arithmetic number, because the mean of its divisors is an integer number (371323890).

Almost surely, 2^12108132780 is an apocalyptic number.

12108132780 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 12108132780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17823546720).

12108132780 is an abundant number, since it is smaller than the sum of its proper divisors (23538960660).

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

12108132780 is a wasteful number, since it uses less digits than its factorization.

12108132780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114179 (or 114177 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The spelling of 12108132780 in words is "twelve billion, one hundred eight million, one hundred thirty-two thousand, seven hundred eighty".