12032209978 has 8 divisors (see below), whose sum is σ = 18049021920. Its totient is φ = 6015869340.

The previous prime is 12032209921. The next prime is 12032209979. The reversal of 12032209978 is 87990223021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12032209979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44998 + ... + 161521.

It is an arithmetic number, because the mean of its divisors is an integer number (2256127740).

Almost surely, 2^12032209978 is an apocalyptic number.

12032209978 is a deficient number, since it is larger than the sum of its proper divisors (6016811942).

12032209978 is a wasteful number, since it uses less digits than its factorization.

12032209978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235652.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 12032209978 in words is "twelve billion, thirty-two million, two hundred nine thousand, nine hundred seventy-eight".