12672028978 has 16 divisors (see below), whose sum is σ = 21947433984. Its totient is φ = 5374880640.

The previous prime is 12672028949. The next prime is 12672028979. The reversal of 12672028978 is 87982027621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12672028979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4664338 + ... + 4667053.

It is an arithmetic number, because the mean of its divisors is an integer number (1371714624).

Almost surely, 2^12672028978 is an apocalyptic number.

12672028978 is a deficient number, since it is larger than the sum of its proper divisors (9275405006).

12672028978 is an equidigital number, since it uses as much as digits as its factorization.

12672028978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9331497.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 12672028978 in words is "twelve billion, six hundred seventy-two million, twenty-eight thousand, nine hundred seventy-eight".