12651075529 has 9 divisors (see below), whose sum is σ = 12759634741. Its totient is φ = 12543435040.

The previous prime is 12651075511. The next prime is 12651075583. The reversal of 12651075529 is 92557015621.

The square root of 12651075529 is 112477.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 274068025 + 12377007504 = 16555^2 + 111252^2 .

It is not a de Polignac number, because 12651075529 - 2²³ = 12642686921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12651075509) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15408939 + ... + 15409759.

Almost surely, 2^12651075529 is an apocalyptic number.

12651075529 is the 112477-th square number.

12651075529 is the 56239-th centered octagonal number.

It is an amenable number.

12651075529 is a deficient number, since it is larger than the sum of its proper divisors (108559212).

12651075529 is an frugal number, since it uses more digits than its factorization.

12651075529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 43.

The spelling of 12651075529 in words is "twelve billion, six hundred fifty-one million, seventy-five thousand, five hundred twenty-nine".