11647113172 has 6 divisors (see below), whose sum is σ = 20382448058. Its totient is φ = 5823556584.

The previous prime is 11647113167. The next prime is 11647113173. The reversal of 11647113172 is 27131174611.

It can be written as a sum of positive squares in only one way, i.e., 7913169936 + 3733943236 = 88956^2 + 61106^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11647113173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1455889143 + ... + 1455889150.

Almost surely, 2^11647113172 is an apocalyptic number.

It is an amenable number.

11647113172 is a deficient number, since it is larger than the sum of its proper divisors (8735334886).

11647113172 is a wasteful number, since it uses less digits than its factorization.

11647113172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2911778297 (or 2911778295 counting only the distinct ones).

The product of its digits is 7056, while the sum is 34.

Adding to 11647113172 its reverse (27131174611), we get a palindrome (38778287783).

The spelling of 11647113172 in words is "eleven billion, six hundred forty-seven million, one hundred thirteen thousand, one hundred seventy-two".