12620523340 has 96 divisors (see below), whose sum is σ = 28185292800. Its totient is φ = 4739454720.

The previous prime is 12620523323. The next prime is 12620523353. The reversal of 12620523340 is 4332502621.

It is a junction number, because it is equal to n+sod(n) for n = 12620523299 and 12620523308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3067885 + ... + 3071995.

It is an arithmetic number, because the mean of its divisors is an integer number (293596800).

Almost surely, 2^12620523340 is an apocalyptic number.

12620523340 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 12620523340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14092646400).

12620523340 is an abundant number, since it is smaller than the sum of its proper divisors (15564769460).

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

12620523340 is a wasteful number, since it uses less digits than its factorization.

12620523340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4295 (or 4293 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The spelling of 12620523340 in words is "twelve billion, six hundred twenty million, five hundred twenty-three thousand, three hundred forty".