12104011978 has 16 divisors (see below), whose sum is σ = 19257495840. Its totient is φ = 5689710000.

The previous prime is 12104011961. The next prime is 12104011979. The reversal of 12104011978 is 87911040121.

It is not an unprimeable number, because it can be changed into a prime (12104011979) 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, 1210773 + ... + 1220728.

It is an arithmetic number, because the mean of its divisors is an integer number (1203593490).

Almost surely, 2^12104011978 is an apocalyptic number.

12104011978 is a deficient number, since it is larger than the sum of its proper divisors (7153483862).

12104011978 is a wasteful number, since it uses less digits than its factorization.

12104011978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2431653.

The product of its (nonzero) digits is 4032, while the sum is 34.

The spelling of 12104011978 in words is "twelve billion, one hundred four million, eleven thousand, nine hundred seventy-eight".