11543540774 has 4 divisors (see below), whose sum is σ = 17315311164. Its totient is φ = 5771770386.

The previous prime is 11543540717. The next prime is 11543540777. The reversal of 11543540774 is 47704534511.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543540777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2885885192 + ... + 2885885195.

It is an arithmetic number, because the mean of its divisors is an integer number (4328827791).

Almost surely, 2^11543540774 is an apocalyptic number.

11543540774 is a deficient number, since it is larger than the sum of its proper divisors (5771770390).

11543540774 is an equidigital number, since it uses as much as digits as its factorization.

11543540774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5771770389.

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 11543540774 in words is "eleven billion, five hundred forty-three million, five hundred forty thousand, seven hundred seventy-four".