12642565235 has 36 divisors (see below), whose sum is σ = 16060575456. Its totient is φ = 9553451040.

The previous prime is 12642565223. The next prime is 12642565237. The reversal of 12642565235 is 53256524621.

It is not a de Polignac number, because 12642565235 - 2²² = 12638370931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12642565192 and 12642565201.

It is not an unprimeable number, because it can be changed into a prime (12642565237) 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 35 ways as a sum of consecutive naturals, for example, 8883734 + ... + 8885156.

It is an arithmetic number, because the mean of its divisors is an integer number (446127096).

Almost surely, 2^12642565235 is an apocalyptic number.

12642565235 is a deficient number, since it is larger than the sum of its proper divisors (3418010221).

12642565235 is an equidigital number, since it uses as much as digits as its factorization.

12642565235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576 (or 1502 counting only the distinct ones).

The product of its digits is 432000, while the sum is 41.

The spelling of 12642565235 in words is "twelve billion, six hundred forty-two million, five hundred sixty-five thousand, two hundred thirty-five".