11646231543 has 8 divisors (see below), whose sum is σ = 17253676400. Its totient is φ = 7764154344.

The previous prime is 11646231533. The next prime is 11646231551. The reversal of 11646231543 is 34513264611.

11646231543 is a `hidden beast` number, since 1 + 1 + 646 + 2 + 3 + 1 + 5 + 4 + 3 = 666.

It is not a de Polignac number, because 11646231543 - 2⁶ = 11646231479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11646231498 and 11646231507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11646231503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215670928 + ... + 215670981.

It is an arithmetic number, because the mean of its divisors is an integer number (2156709550).

Almost surely, 2^11646231543 is an apocalyptic number.

11646231543 is a deficient number, since it is larger than the sum of its proper divisors (5607444857).

11646231543 is an equidigital number, since it uses as much as digits as its factorization.

11646231543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431341918 (or 431341912 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The spelling of 11646231543 in words is "eleven billion, six hundred forty-six million, two hundred thirty-one thousand, five hundred forty-three".