11660003428 has 6 divisors (see below), whose sum is σ = 20405006006. Its totient is φ = 5830001712.

The previous prime is 11660003347. The next prime is 11660003573. The reversal of 11660003428 is 82430006611.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11517153124 + 142850304 = 107318^2 + 11952^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11660003428.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1457500425 + ... + 1457500432.

Almost surely, 2^11660003428 is an apocalyptic number.

It is an amenable number.

11660003428 is a deficient number, since it is larger than the sum of its proper divisors (8745002578).

11660003428 is a wasteful number, since it uses less digits than its factorization.

11660003428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2915000861 (or 2915000859 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 11660003428 in words is "eleven billion, six hundred sixty million, three thousand, four hundred twenty-eight".