12820988280 has 32 divisors (see below), whose sum is σ = 38462965200. Its totient is φ = 3418930176.

The previous prime is 12820988251. The next prime is 12820988281. The reversal of 12820988280 is 8288902821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12820988281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53420665 + ... + 53420904.

Almost surely, 2^12820988280 is an apocalyptic number.

12820988280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12820988280 is an abundant number, since it is smaller than the sum of its proper divisors (25641976920).

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

12820988280 is a wasteful number, since it uses less digits than its factorization.

12820988280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106841583 (or 106841579 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 48.

The spelling of 12820988280 in words is "twelve billion, eight hundred twenty million, nine hundred eighty-eight thousand, two hundred eighty".