12156789753 has 12 divisors (see below), whose sum is σ = 17661311460. Its totient is φ = 8057678496.

The previous prime is 12156789739. The next prime is 12156789769. The reversal of 12156789753 is 35798765121.

12156789753 is a `hidden beast` number, since 1 + 2 + 1 + 567 + 8 + 9 + 75 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11330112249 + 826677504 = 106443^2 + 28752^2 .

It is not a de Polignac number, because 12156789753 - 2⁵ = 12156789721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12156789753.

It is not an unprimeable number, because it can be changed into a prime (12156789773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3902358 + ... + 3905471.

It is an arithmetic number, because the mean of its divisors is an integer number (1471775955).

Almost surely, 2^12156789753 is an apocalyptic number.

It is an amenable number.

12156789753 is a deficient number, since it is larger than the sum of its proper divisors (5504521707).

12156789753 is a wasteful number, since it uses less digits than its factorization.

12156789753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7808008 (or 7808005 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 54.

The spelling of 12156789753 in words is "twelve billion, one hundred fifty-six million, seven hundred eighty-nine thousand, seven hundred fifty-three".