12720164320 has 96 divisors (see below), whose sum is σ = 31924857888. Its totient is φ = 4772855808.

The previous prime is 12720164299. The next prime is 12720164341. The reversal of 12720164320 is 2346102721.

It is an interprime number because it is at equal distance from previous prime (12720164299) and next prime (12720164341).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 827424 + ... + 842656.

It is an arithmetic number, because the mean of its divisors is an integer number (332550603).

Almost surely, 2^12720164320 is an apocalyptic number.

12720164320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12720164320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15962428944).

12720164320 is an abundant number, since it is smaller than the sum of its proper divisors (19204693568).

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

12720164320 is a wasteful number, since it uses less digits than its factorization.

12720164320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15572 (or 15564 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The spelling of 12720164320 in words is "twelve billion, seven hundred twenty million, one hundred sixty-four thousand, three hundred twenty".