12920380600 has 96 divisors (see below), whose sum is σ = 30426177600. Its totient is φ = 5101977600.

The previous prime is 12920380597. The next prime is 12920380621. The reversal of 12920380600 is 608302921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12434881 + ... + 12435919.

It is an arithmetic number, because the mean of its divisors is an integer number (316939350).

Almost surely, 2^12920380600 is an apocalyptic number.

12920380600 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 12920380600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15213088800).

12920380600 is an abundant number, since it is smaller than the sum of its proper divisors (17505797000).

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

12920380600 is a wasteful number, since it uses less digits than its factorization.

12920380600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793 (or 1784 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 12920380600 in words is "twelve billion, nine hundred twenty million, three hundred eighty thousand, six hundred".