12720020972 has 12 divisors (see below), whose sum is σ = 23431617720. Its totient is φ = 6025273056.

The previous prime is 12720020939. The next prime is 12720021001. The reversal of 12720020972 is 27902002721.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 83684273 + ... + 83684424.

It is an arithmetic number, because the mean of its divisors is an integer number (1952634810).

Almost surely, 2^12720020972 is an apocalyptic number.

It is an amenable number.

12720020972 is a deficient number, since it is larger than the sum of its proper divisors (10711596748).

12720020972 is a wasteful number, since it uses less digits than its factorization.

12720020972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167368720 (or 167368718 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The spelling of 12720020972 in words is "twelve billion, seven hundred twenty million, twenty thousand, nine hundred seventy-two".