12540834702 has 144 divisors (see below), whose sum is σ = 30476903184. Its totient is φ = 3723456000.

The previous prime is 12540834701. The next prime is 12540834763. The reversal of 12540834702 is 20743804521.

It is a happy number.

12540834702 is a `hidden beast` number, since 12 + 540 + 8 + 34 + 70 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12540834701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 31273702 + ... + 31274102.

It is an arithmetic number, because the mean of its divisors is an integer number (211645161).

Almost surely, 2^12540834702 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12540834702, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15238451592).

12540834702 is an abundant number, since it is smaller than the sum of its proper divisors (17936068482).

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

12540834702 is a wasteful number, since it uses less digits than its factorization.

12540834702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The spelling of 12540834702 in words is "twelve billion, five hundred forty million, eight hundred thirty-four thousand, seven hundred two".