11501342543 has 4 divisors (see below), whose sum is σ = 11673004440. Its totient is φ = 11329680648.

The previous prime is 11501342527. The next prime is 11501342603. The reversal of 11501342543 is 34524310511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34524310511 = 2531 ⋅13640581.

It is a cyclic number.

It is not a de Polignac number, because 11501342543 - 2⁴ = 11501342527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11501342243) 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, 85830848 + ... + 85830981.

It is an arithmetic number, because the mean of its divisors is an integer number (2918251110).

Almost surely, 2^11501342543 is an apocalyptic number.

11501342543 is a deficient number, since it is larger than the sum of its proper divisors (171661897).

11501342543 is an equidigital number, since it uses as much as digits as its factorization.

11501342543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171661896.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 11501342543 in words is "eleven billion, five hundred one million, three hundred forty-two thousand, five hundred forty-three".