166061665005 has 16 divisors (see below), whose sum is σ = 271351828224. Its totient is φ = 86681833280.

The previous prime is 166061664929. The next prime is 166061665013. The reversal of 166061665005 is 500566160661.

It is not a de Polignac number, because 166061665005 - 2⁸ = 166061664749 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117773526 + ... + 117774935.

It is an arithmetic number, because the mean of its divisors is an integer number (16959489264).

Almost surely, 2^166061665005 is an apocalyptic number.

166061665005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166061665005 is a deficient number, since it is larger than the sum of its proper divisors (105290163219).

166061665005 is a wasteful number, since it uses less digits than its factorization.

166061665005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235548516.

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

The spelling of 166061665005 in words is "one hundred sixty-six billion, sixty-one million, six hundred sixty-five thousand, five".