12658109520 has 320 divisors, whose sum is σ = 46259896320. Its totient is φ = 2803175424.

The previous prime is 12658109483. The next prime is 12658109533. The reversal of 12658109520 is 2590185621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9896241 + ... + 9897519.

It is an arithmetic number, because the mean of its divisors is an integer number (144562176).

Almost surely, 2^12658109520 is an apocalyptic number.

12658109520 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 12658109520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23129948160).

12658109520 is an abundant number, since it is smaller than the sum of its proper divisors (33601786800).

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

12658109520 is a wasteful number, since it uses less digits than its factorization.

12658109520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482 (or 1476 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 39.

The spelling of 12658109520 in words is "twelve billion, six hundred fifty-eight million, one hundred nine thousand, five hundred twenty".