12660772620 has 96 divisors (see below), whose sum is σ = 36796870656. Its totient is φ = 3249158400.

The previous prime is 12660772609. The next prime is 12660772633. The reversal of 12660772620 is 2627706621.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 317857 + ... + 355463.

It is an arithmetic number, because the mean of its divisors is an integer number (383300736).

Almost surely, 2^12660772620 is an apocalyptic number.

12660772620 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 12660772620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18398435328).

12660772620 is an abundant number, since it is smaller than the sum of its proper divisors (24136098036).

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

12660772620 is a wasteful number, since it uses less digits than its factorization.

12660772620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37831 (or 37829 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 12660772620 in words is "twelve billion, six hundred sixty million, seven hundred seventy-two thousand, six hundred twenty".