12530261326734 has 128 divisors (see below), whose sum is σ = 28431560424960. Its totient is φ = 4089750912000.

The previous prime is 12530261326703. The next prime is 12530261326753. The reversal of 12530261326734 is 43762316203521.

It is a happy number.

12530261326734 is a `hidden beast` number, since 1 + 2 + 5 + 3 + 0 + 2 + 613 + 26 + 7 + 3 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 12530261326734.

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, 784555369 + ... + 784571339.

It is an arithmetic number, because the mean of its divisors is an integer number (222121565820).

Almost surely, 2^{12530261326734} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12530261326734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14215780212480).

12530261326734 is an abundant number, since it is smaller than the sum of its proper divisors (15901299098226).

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

12530261326734 is a wasteful number, since it uses less digits than its factorization.

12530261326734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17663 (or 17657 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 12530261326734 in words is "twelve trillion, five hundred thirty billion, two hundred sixty-one million, three hundred twenty-six thousand, seven hundred thirty-four".