12432904720 has 20 divisors (see below), whose sum is σ = 28906503660. Its totient is φ = 4973161856.

The previous prime is 12432904711. The next prime is 12432904723. The reversal of 12432904720 is 2740923421.

It can be written as a sum of positive squares in 2 ways, for example, as 3575083264 + 8857821456 = 59792^2 + 94116^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (12432904723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77705575 + ... + 77705734.

It is an arithmetic number, because the mean of its divisors is an integer number (1445325183).

Almost surely, 2^12432904720 is an apocalyptic number.

12432904720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12432904720 is an abundant number, since it is smaller than the sum of its proper divisors (16473598940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12432904720 is a wasteful number, since it uses less digits than its factorization.

12432904720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155411322 (or 155411316 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 12432904720 in words is "twelve billion, four hundred thirty-two million, nine hundred four thousand, seven hundred twenty".