12643208028330 has 128 divisors (see below), whose sum is σ = 34005666779136. Its totient is φ = 2981410272000.

The previous prime is 12643208028301. The next prime is 12643208028349. The reversal of 12643208028330 is 3382080234621.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47767855 + ... + 48031805.

It is an arithmetic number, because the mean of its divisors is an integer number (265669271712).

Almost surely, 2^{12643208028330} is an apocalyptic number.

12643208028330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12643208028330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17002833389568).

12643208028330 is an abundant number, since it is smaller than the sum of its proper divisors (21362458750806).

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

12643208028330 is a wasteful number, since it uses less digits than its factorization.

12643208028330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267932.

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 12643208028330 in words is "twelve trillion, six hundred forty-three billion, two hundred eight million, twenty-eight thousand, three hundred thirty".