660011565442 has 32 divisors (see below), whose sum is σ = 1033435972800. Its totient is φ = 315751157568.

The previous prime is 660011565403. The next prime is 660011565443. The reversal of 660011565442 is 244565110066.

It is a super-3 number, since 3×660011565442³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 660011565395 and 660011565404.

It is not an unprimeable number, because it can be changed into a prime (660011565443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2973309 + ... + 3187567.

It is an arithmetic number, because the mean of its divisors is an integer number (32294874150).

Almost surely, 2^660011565442 is an apocalyptic number.

660011565442 is a deficient number, since it is larger than the sum of its proper divisors (373424407358).

660011565442 is a wasteful number, since it uses less digits than its factorization.

660011565442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214770.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 660011565442 in words is "six hundred sixty billion, eleven million, five hundred sixty-five thousand, four hundred forty-two".