12761808920 has 128 divisors (see below), whose sum is σ = 33988032000. Its totient is φ = 4309861248.

The previous prime is 12761808919. The next prime is 12761808947. The reversal of 12761808920 is 2980816721.

It is a congruent 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, 912299 + ... + 926181.

It is an arithmetic number, because the mean of its divisors is an integer number (265531500).

Almost surely, 2^12761808920 is an apocalyptic number.

12761808920 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 12761808920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16994016000).

12761808920 is an abundant number, since it is smaller than the sum of its proper divisors (21226223080).

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

12761808920 is a wasteful number, since it uses less digits than its factorization.

12761808920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13982 (or 13964 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The spelling of 12761808920 in words is "twelve billion, seven hundred sixty-one million, eight hundred eight thousand, nine hundred twenty".