11543315073 has 4 divisors (see below), whose sum is σ = 15391086768. Its totient is φ = 7695543380.

The previous prime is 11543315051. The next prime is 11543315083. The reversal of 11543315073 is 37051334511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37051334511 = 3 ⋅12350444837.

It is a cyclic number.

It is not a de Polignac number, because 11543315073 - 2⁹ = 11543314561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11543315023) 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, 1923885843 + ... + 1923885848.

It is an arithmetic number, because the mean of its divisors is an integer number (3847771692).

Almost surely, 2^11543315073 is an apocalyptic number.

It is an amenable number.

11543315073 is a deficient number, since it is larger than the sum of its proper divisors (3847771695).

11543315073 is an equidigital number, since it uses as much as digits as its factorization.

11543315073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847771694.

The product of its (nonzero) digits is 18900, while the sum is 33.

Adding to 11543315073 its reverse (37051334511), we get a palindrome (48594649584).

The spelling of 11543315073 in words is "eleven billion, five hundred forty-three million, three hundred fifteen thousand, seventy-three".