12808852290 has 96 divisors (see below), whose sum is σ = 36356327280. Its totient is φ = 3109736448.

The previous prime is 12808852279. The next prime is 12808852291. The reversal of 12808852290 is 9225880821.

12808852290 is a `hidden beast` number, since 1 + 280 + 8 + 85 + 2 + 290 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 555026481 + 12253825809 = 23559^2 + 110697^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (12808852291) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10426 + ... + 160394.

Almost surely, 2^12808852290 is an apocalyptic number.

12808852290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12808852290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18178163640).

12808852290 is an abundant number, since it is smaller than the sum of its proper divisors (23547474990).

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

12808852290 is a wasteful number, since it uses less digits than its factorization.

12808852290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150068 (or 150065 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The spelling of 12808852290 in words is "twelve billion, eight hundred eight million, eight hundred fifty-two thousand, two hundred ninety".