11563320077 has 4 divisors (see below), whose sum is σ = 11845352316. Its totient is φ = 11281287840.

The previous prime is 11563320071. The next prime is 11563320079. The reversal of 11563320077 is 77002336511.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2051999401 + 9511320676 = 45299^2 + 97526^2 .

It is a cyclic number.

It is not a de Polignac number, because 11563320077 - 2¹⁴ = 11563303693 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 (11563320071) 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, 141016058 + ... + 141016139.

It is an arithmetic number, because the mean of its divisors is an integer number (2961338079).

Almost surely, 2^11563320077 is an apocalyptic number.

It is an amenable number.

11563320077 is a deficient number, since it is larger than the sum of its proper divisors (282032239).

11563320077 is an equidigital number, since it uses as much as digits as its factorization.

11563320077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282032238.

The product of its (nonzero) digits is 26460, while the sum is 35.

Adding to 11563320077 its reverse (77002336511), we get a palindrome (88565656588).

It can be divided in two parts, 1156 and 3320077, that added together give a palindrome (3321233).

The spelling of 11563320077 in words is "eleven billion, five hundred sixty-three million, three hundred twenty thousand, seventy-seven".