12788209535 has 16 divisors (see below), whose sum is σ = 15486762816. Its totient is φ = 10137017088.

The previous prime is 12788209457. The next prime is 12788209537. The reversal of 12788209535 is 53590288721.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12788209535 - 2⁸ = 12788209279 is a prime.

It is a super-2 number, since 2×12788209535² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12788209537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240539 + ... + 288851.

It is an arithmetic number, because the mean of its divisors is an integer number (967922676).

Almost surely, 2^12788209535 is an apocalyptic number.

12788209535 is a deficient number, since it is larger than the sum of its proper divisors (2698553281).

12788209535 is a wasteful number, since it uses less digits than its factorization.

12788209535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48802.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 12788209535 in words is "twelve billion, seven hundred eighty-eight million, two hundred nine thousand, five hundred thirty-five".