11529437768 has 8 divisors (see below), whose sum is σ = 21617695830. Its totient is φ = 5764718880.

The previous prime is 11529437743. The next prime is 11529437779. The reversal of 11529437768 is 86773492511.

It can be written as a sum of positive squares in only one way, i.e., 8442301924 + 3087135844 = 91882^2 + 55562^2 .

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, 720589853 + ... + 720589868.

Almost surely, 2^11529437768 is an apocalyptic number.

It is an amenable number.

11529437768 is a deficient number, since it is larger than the sum of its proper divisors (10088258062).

11529437768 is a wasteful number, since it uses less digits than its factorization.

11529437768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441179727 (or 1441179723 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 53.

The spelling of 11529437768 in words is "eleven billion, five hundred twenty-nine million, four hundred thirty-seven thousand, seven hundred sixty-eight".