12610243521 has 6 divisors (see below), whose sum is σ = 18214796210. Its totient is φ = 8406829008.

The previous prime is 12610243489. The next prime is 12610243553. The reversal of 12610243521 is 12534201621.

12610243521 is a `hidden beast` number, since 1 + 2 + 610 + 2 + 43 + 5 + 2 + 1 = 666.

12610243521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12610243489) and next prime (12610243553).

It can be written as a sum of positive squares in only one way, i.e., 9808129296 + 2802114225 = 99036^2 + 52935^2 .

It is not a de Polignac number, because 12610243521 - 2⁵ = 12610243489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12610243571) 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 5 ways as a sum of consecutive naturals, for example, 700569076 + ... + 700569093.

Almost surely, 2^12610243521 is an apocalyptic number.

It is an amenable number.

12610243521 is a deficient number, since it is larger than the sum of its proper divisors (5604552689).

12610243521 is a wasteful number, since it uses less digits than its factorization.

12610243521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401138175 (or 1401138172 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 12610243521 in words is "twelve billion, six hundred ten million, two hundred forty-three thousand, five hundred twenty-one".