12520322620 has 24 divisors (see below), whose sum is σ = 28315191744. Its totient is φ = 4622888256.

The previous prime is 12520322597. The next prime is 12520322623. The reversal of 12520322620 is 2622302521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520322623) 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, 24077284 + ... + 24077803.

It is an arithmetic number, because the mean of its divisors is an integer number (1179799656).

Almost surely, 2^12520322620 is an apocalyptic number.

12520322620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12520322620 is an abundant number, since it is smaller than the sum of its proper divisors (15794869124).

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

12520322620 is a wasteful number, since it uses less digits than its factorization.

12520322620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48155109 (or 48155107 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The spelling of 12520322620 in words is "twelve billion, five hundred twenty million, three hundred twenty-two thousand, six hundred twenty".