660610506165 has 8 divisors (see below), whose sum is σ = 1056976809888. Its totient is φ = 352325603280.

The previous prime is 660610506103. The next prime is 660610506203. The reversal of 660610506165 is 561605016066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 660610506165 - 2⁸ = 660610505909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22020350191 + ... + 22020350220.

It is an arithmetic number, because the mean of its divisors is an integer number (132122101236).

Almost surely, 2^660610506165 is an apocalyptic number.

It is an amenable number.

660610506165 is a deficient number, since it is larger than the sum of its proper divisors (396366303723).

660610506165 is a wasteful number, since it uses less digits than its factorization.

660610506165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44040700419.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 660610506165 in words is "six hundred sixty billion, six hundred ten million, five hundred six thousand, one hundred sixty-five".