12559601951240 has 96 divisors (see below), whose sum is σ = 29286771710040. Its totient is φ = 4847349749760.

The previous prime is 12559601951203. The next prime is 12559601951261. The reversal of 12559601951240 is 4215910695521.

It can be written as a sum of positive squares in 4 ways, for example, as 6806348774404 + 5753253176836 = 2608898^2 + 2398594^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12469514 + ... + 13439046.

Almost surely, 2^{12559601951240} is an apocalyptic number.

12559601951240 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 12559601951240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14643385855020).

12559601951240 is an abundant number, since it is smaller than the sum of its proper divisors (16727169758800).

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

12559601951240 is a wasteful number, since it uses less digits than its factorization.

12559601951240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969943 (or 969908 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 50.

The spelling of 12559601951240 in words is "twelve trillion, five hundred fifty-nine billion, six hundred one million, nine hundred fifty-one thousand, two hundred forty".