12732040320 has 64 divisors (see below), whose sum is σ = 40583384640. Its totient is φ = 3395210240.

The previous prime is 12732040319. The next prime is 12732040331. The reversal of 12732040320 is 2304023721.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3313716 + ... + 3317555.

It is an arithmetic number, because the mean of its divisors is an integer number (634115385).

Almost surely, 2^12732040320 is an apocalyptic number.

12732040320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12732040320 is an abundant number, since it is smaller than the sum of its proper divisors (27851344320).

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

12732040320 is an equidigital number, since it uses as much as digits as its factorization.

12732040320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6631293 (or 6631281 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The spelling of 12732040320 in words is "twelve billion, seven hundred thirty-two million, forty thousand, three hundred twenty".