12196511980 has 24 divisors (see below), whose sum is σ = 25651925712. Its totient is φ = 4871128512.

The previous prime is 12196511947. The next prime is 12196511981. The reversal of 12196511980 is 8911569121.

It is not an unprimeable number, because it can be changed into a prime (12196511981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453882 + ... + 480001.

It is an arithmetic number, because the mean of its divisors is an integer number (1068830238).

Almost surely, 2^12196511980 is an apocalyptic number.

12196511980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12196511980 is an abundant number, since it is smaller than the sum of its proper divisors (13455413732).

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

12196511980 is a wasteful number, since it uses less digits than its factorization.

12196511980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934545 (or 934543 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 43.

It can be divided in two parts, 12196 and 511980, that added together give a square (524176 = 724²).

The spelling of 12196511980 in words is "twelve billion, one hundred ninety-six million, five hundred eleven thousand, nine hundred eighty".