11201156623 has 4 divisors (see below), whose sum is σ = 11562484288. Its totient is φ = 10839828960.

The previous prime is 11201156597. The next prime is 11201156627. The reversal of 11201156623 is 32665110211.

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 11201156623 - 2⁹ = 11201156111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201156591 and 11201156600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201156627) 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, 180663786 + ... + 180663847.

It is an arithmetic number, because the mean of its divisors is an integer number (2890621072).

Almost surely, 2^11201156623 is an apocalyptic number.

11201156623 is a deficient number, since it is larger than the sum of its proper divisors (361327665).

11201156623 is an equidigital number, since it uses as much as digits as its factorization.

11201156623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361327664.

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 11201156623 its reverse (32665110211), we get a palindrome (43866266834).

The spelling of 11201156623 in words is "eleven billion, two hundred one million, one hundred fifty-six thousand, six hundred twenty-three".