11513783449447 has 4 divisors (see below), whose sum is σ = 11885195818816. Its totient is φ = 11142371080080.

The previous prime is 11513783449439. The next prime is 11513783449481. The reversal of 11513783449447 is 74494438731511.

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

It is a cyclic number.

It is not a de Polignac number, because 11513783449447 - 2³ = 11513783449439 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 (11513780449447) 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, 185706184638 + ... + 185706184699.

It is an arithmetic number, because the mean of its divisors is an integer number (2971298954704).

Almost surely, 2^{11513783449447} is an apocalyptic number.

11513783449447 is a deficient number, since it is larger than the sum of its proper divisors (371412369369).

11513783449447 is an equidigital number, since it uses as much as digits as its factorization.

11513783449447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371412369368.

The product of its digits is 40642560, while the sum is 61.

The spelling of 11513783449447 in words is "eleven trillion, five hundred thirteen billion, seven hundred eighty-three million, four hundred forty-nine thousand, four hundred forty-seven".