12526345653 has 4 divisors (see below), whose sum is σ = 16701794208. Its totient is φ = 8350897100.

The previous prime is 12526345651. The next prime is 12526345679. The reversal of 12526345653 is 35654362521.

It is a happy number.

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 12526345653 - 2¹ = 12526345651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12526345651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2087724273 + ... + 2087724278.

It is an arithmetic number, because the mean of its divisors is an integer number (4175448552).

Almost surely, 2^12526345653 is an apocalyptic number.

It is an amenable number.

12526345653 is a deficient number, since it is larger than the sum of its proper divisors (4175448555).

12526345653 is an equidigital number, since it uses as much as digits as its factorization.

12526345653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175448554.

The product of its digits is 648000, while the sum is 42.

The spelling of 12526345653 in words is "twelve billion, five hundred twenty-six million, three hundred forty-five thousand, six hundred fifty-three".