11505668008 has 8 divisors (see below), whose sum is σ = 21573127530. Its totient is φ = 5752834000.

The previous prime is 11505667961. The next prime is 11505668021. The reversal of 11505668008 is 80086650511.

It can be written as a sum of positive squares in only one way, i.e., 9943679524 + 1561988484 = 99718^2 + 39522^2 .

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, 719104243 + ... + 719104258.

Almost surely, 2^11505668008 is an apocalyptic number.

It is an amenable number.

11505668008 is a deficient number, since it is larger than the sum of its proper divisors (10067459522).

11505668008 is a wasteful number, since it uses less digits than its factorization.

11505668008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438208507 (or 1438208503 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 40.

The spelling of 11505668008 in words is "eleven billion, five hundred five million, six hundred sixty-eight thousand, eight".