11543897143 has 4 divisors (see below), whose sum is σ = 11598607768. Its totient is φ = 11489186520.

The previous prime is 11543897137. The next prime is 11543897201. The reversal of 11543897143 is 34179834511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11543897143 is a prime.

It is a super-2 number, since 2×11543897143² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11543897093 and 11543897102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543891143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27354996 + ... + 27355417.

It is an arithmetic number, because the mean of its divisors is an integer number (2899651942).

Almost surely, 2^11543897143 is an apocalyptic number.

11543897143 is a deficient number, since it is larger than the sum of its proper divisors (54710625).

11543897143 is an equidigital number, since it uses as much as digits as its factorization.

11543897143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54710624.

The product of its digits is 362880, while the sum is 46.

The spelling of 11543897143 in words is "eleven billion, five hundred forty-three million, eight hundred ninety-seven thousand, one hundred forty-three".