12720120554 has 16 divisors (see below), whose sum is σ = 19705356000. Its totient is φ = 6153589584.

The previous prime is 12720120541. The next prime is 12720120557. The reversal of 12720120554 is 45502102721.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12720120557) 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, 466904 + ... + 493395.

It is an arithmetic number, because the mean of its divisors is an integer number (1231584750).

Almost surely, 2^12720120554 is an apocalyptic number.

12720120554 is a deficient number, since it is larger than the sum of its proper divisors (6985235446).

12720120554 is a wasteful number, since it uses less digits than its factorization.

12720120554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960517.

The product of its (nonzero) digits is 5600, while the sum is 29.

The spelling of 12720120554 in words is "twelve billion, seven hundred twenty million, one hundred twenty thousand, five hundred fifty-four".