660010210161 has 4 divisors (see below), whose sum is σ = 880013613552. Its totient is φ = 440006806772.

The previous prime is 660010210141. The next prime is 660010210201. The reversal of 660010210161 is 161012010066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660010210161 is a prime.

It is a super-2 number, since 2×660010210161² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (660010210141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110001701691 + ... + 110001701696.

It is an arithmetic number, because the mean of its divisors is an integer number (220003403388).

Almost surely, 2^660010210161 is an apocalyptic number.

It is an amenable number.

660010210161 is a deficient number, since it is larger than the sum of its proper divisors (220003403391).

660010210161 is a wasteful number, since it uses less digits than its factorization.

660010210161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220003403390.

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 660010210161 in words is "six hundred sixty billion, ten million, two hundred ten thousand, one hundred sixty-one".