11661163234664 has 8 divisors (see below), whose sum is σ = 21864681065010. Its totient is φ = 5830581617328.

The previous prime is 11661163234607. The next prime is 11661163234673. The reversal of 11661163234664 is 46643236116611.

It can be written as a sum of positive squares in only one way, i.e., 6762652260100 + 4898510974564 = 2600510^2 + 2213258^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728822702159 + ... + 728822702174.

Almost surely, 2^{11661163234664} is an apocalyptic number.

It is an amenable number.

11661163234664 is a deficient number, since it is larger than the sum of its proper divisors (10203517830346).

11661163234664 is a wasteful number, since it uses less digits than its factorization.

11661163234664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457645404339 (or 1457645404335 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 50.

The spelling of 11661163234664 in words is "eleven trillion, six hundred sixty-one billion, one hundred sixty-three million, two hundred thirty-four thousand, six hundred sixty-four".