11711731216 has 10 divisors (see below), whose sum is σ = 22691479262. Its totient is φ = 5855865600.

The previous prime is 11711731189. The next prime is 11711731217. The reversal of 11711731216 is 61213711711.

It can be written as a sum of positive squares in only one way, i.e., 11474694400 + 237036816 = 107120^2 + 15396^2 .

It is not an unprimeable number, because it can be changed into a prime (11711731217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365991585 + ... + 365991616.

Almost surely, 2^11711731216 is an apocalyptic number.

11711731216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11711731216 is a deficient number, since it is larger than the sum of its proper divisors (10979748046).

11711731216 is an equidigital number, since it uses as much as digits as its factorization.

11711731216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731983209 (or 731983203 counting only the distinct ones).

The product of its digits is 1764, while the sum is 31.

The spelling of 11711731216 in words is "eleven billion, seven hundred eleven million, seven hundred thirty-one thousand, two hundred sixteen".