12653533261 has 4 divisors (see below), whose sum is σ = 12655266624. Its totient is φ = 12651799900.

The previous prime is 12653533241. The next prime is 12653533301. The reversal of 12653533261 is 16233535621.

12653533261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12653533261 - 2¹⁵ = 12653500493 is a prime.

It is a super-2 number, since 2×12653533261² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12653533261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12653533241) 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 3 ways as a sum of consecutive naturals, for example, 855685 + ... + 870346.

It is an arithmetic number, because the mean of its divisors is an integer number (3163816656).

Almost surely, 2^12653533261 is an apocalyptic number.

It is an amenable number.

12653533261 is a deficient number, since it is larger than the sum of its proper divisors (1733363).

12653533261 is an equidigital number, since it uses as much as digits as its factorization.

12653533261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733362.

The product of its digits is 97200, while the sum is 37.

The spelling of 12653533261 in words is "twelve billion, six hundred fifty-three million, five hundred thirty-three thousand, two hundred sixty-one".