12581340724 has 12 divisors (see below), whose sum is σ = 22086803844. Its totient is φ = 6270825344.

The previous prime is 12581340719. The next prime is 12581340743. The reversal of 12581340724 is 42704318521.

It can be written as a sum of positive squares in 2 ways, for example, as 5015472400 + 7565868324 = 70820^2 + 86982^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4959829 + ... + 4962364.

It is an arithmetic number, because the mean of its divisors is an integer number (1840566987).

Almost surely, 2^12581340724 is an apocalyptic number.

It is an amenable number.

12581340724 is a deficient number, since it is larger than the sum of its proper divisors (9505463120).

12581340724 is a wasteful number, since it uses less digits than its factorization.

12581340724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9922514 (or 9922512 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 12581340724 in words is "twelve billion, five hundred eighty-one million, three hundred forty thousand, seven hundred twenty-four".