11516145583 has 4 divisors (see below), whose sum is σ = 11516574160. Its totient is φ = 11515717008.

The previous prime is 11516145541. The next prime is 11516145607. The reversal of 11516145583 is 38554161511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38554161511 = 31147 ⋅1237813.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11516145583 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 (11516145533) 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, 171078 + ... + 228691.

It is an arithmetic number, because the mean of its divisors is an integer number (2879143540).

Almost surely, 2^11516145583 is an apocalyptic number.

11516145583 is a deficient number, since it is larger than the sum of its proper divisors (428577).

11516145583 is an equidigital number, since it uses as much as digits as its factorization.

11516145583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428576.

The product of its digits is 72000, while the sum is 40.

The spelling of 11516145583 in words is "eleven billion, five hundred sixteen million, one hundred forty-five thousand, five hundred eighty-three".