11131022664 has 24 divisors (see below), whose sum is σ = 30146519910. Its totient is φ = 3710340864.

The previous prime is 11131022647. The next prime is 11131022713. The reversal of 11131022664 is 46622013111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9971620164 + 1159402500 = 99858^2 + 34050^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 77298697 + ... + 77298840.

Almost surely, 2^11131022664 is an apocalyptic number.

It is an amenable number.

11131022664 is an abundant number, since it is smaller than the sum of its proper divisors (19015497246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11131022664 is a wasteful number, since it uses less digits than its factorization.

11131022664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154597549 (or 154597542 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 11131022664 its reverse (46622013111), we get a palindrome (57753035775).

The spelling of 11131022664 in words is "eleven billion, one hundred thirty-one million, twenty-two thousand, six hundred sixty-four".