11604567773 has 4 divisors (see below), whose sum is σ = 11604783228. Its totient is φ = 11604352320.

The previous prime is 11604567769. The next prime is 11604567781. The reversal of 11604567773 is 37776540611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7472392249 + 4132175524 = 86443^2 + 64282^2 .

It is a cyclic number.

It is not a de Polignac number, because 11604567773 - 2² = 11604567769 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 (11604567473) 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, 52763 + ... + 161223.

It is an arithmetic number, because the mean of its divisors is an integer number (2901195807).

Almost surely, 2^11604567773 is an apocalyptic number.

It is an amenable number.

11604567773 is a deficient number, since it is larger than the sum of its proper divisors (215455).

11604567773 is a wasteful number, since it uses less digits than its factorization.

11604567773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215454.

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 11604567773 in words is "eleven billion, six hundred four million, five hundred sixty-seven thousand, seven hundred seventy-three".