11177211868 has 48 divisors (see below), whose sum is σ = 19988736768. Its totient is φ = 5467904000.

The previous prime is 11177211847. The next prime is 11177211869. The reversal of 11177211868 is 86811277111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11177211869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17436828 + ... + 17437468.

It is an arithmetic number, because the mean of its divisors is an integer number (416432016).

Almost surely, 2^11177211868 is an apocalyptic number.

It is an amenable number.

11177211868 is a deficient number, since it is larger than the sum of its proper divisors (8811524900).

11177211868 is a wasteful number, since it uses less digits than its factorization.

11177211868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194 (or 1192 counting only the distinct ones).

The product of its digits is 37632, while the sum is 43.

Adding to 11177211868 its reverse (86811277111), we get a palindrome (97988488979).

The spelling of 11177211868 in words is "eleven billion, one hundred seventy-seven million, two hundred eleven thousand, eight hundred sixty-eight".