11646512143 has 16 divisors (see below), whose sum is σ = 13924008000. Its totient is φ = 9530180352.

The previous prime is 11646512131. The next prime is 11646512161. The reversal of 11646512143 is 34121564611.

It is not a de Polignac number, because 11646512143 - 2⁹ = 11646511631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11646512099 and 11646512108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11646512183) 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 15 ways as a sum of consecutive naturals, for example, 304248 + ... + 340381.

It is an arithmetic number, because the mean of its divisors is an integer number (870250500).

Almost surely, 2^11646512143 is an apocalyptic number.

11646512143 is a deficient number, since it is larger than the sum of its proper divisors (2277495857).

11646512143 is an equidigital number, since it uses as much as digits as its factorization.

11646512143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644754.

The product of its digits is 17280, while the sum is 34.

The spelling of 11646512143 in words is "eleven billion, six hundred forty-six million, five hundred twelve thousand, one hundred forty-three".