12809925340 has 48 divisors (see below), whose sum is σ = 28495533024. Its totient is φ = 4820480000.

The previous prime is 12809925319. The next prime is 12809925347. The reversal of 12809925340 is 4352990821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12809925347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 945615 + ... + 959065.

It is an arithmetic number, because the mean of its divisors is an integer number (593656938).

Almost surely, 2^12809925340 is an apocalyptic number.

12809925340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12809925340 is an abundant number, since it is smaller than the sum of its proper divisors (15685607684).

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

12809925340 is a wasteful number, since it uses less digits than its factorization.

12809925340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16278 (or 16276 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 12809925340 in words is "twelve billion, eight hundred nine million, nine hundred twenty-five thousand, three hundred forty".