12558864340 has 96 divisors (see below), whose sum is σ = 31602493440. Its totient is φ = 4138358400.

The previous prime is 12558864319. The next prime is 12558864349. The reversal of 12558864340 is 4346885521.

12558864340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12558864349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30825 + ... + 161455.

It is an arithmetic number, because the mean of its divisors is an integer number (329192640).

Almost surely, 2^12558864340 is an apocalyptic number.

12558864340 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 12558864340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15801246720).

12558864340 is an abundant number, since it is smaller than the sum of its proper divisors (19043629100).

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

12558864340 is a wasteful number, since it uses less digits than its factorization.

12558864340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130693 (or 130691 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 46.

The spelling of 12558864340 in words is "twelve billion, five hundred fifty-eight million, eight hundred sixty-four thousand, three hundred forty".