166610005165651 has 32 divisors (see below), whose sum is σ = 173893977766080. Its totient is φ = 159436849152000.

The previous prime is 166610005165627. The next prime is 166610005165661. The reversal of 166610005165651 is 156561500016661.

166610005165651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 166610005165651 - 2⁷ = 166610005165523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166610005165595 and 166610005165604.

It is not an unprimeable number, because it can be changed into a prime (166610005165661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1233158001 + ... + 1233293101.

It is an arithmetic number, because the mean of its divisors is an integer number (5434186805190).

Almost surely, 2^{166610005165651} is an apocalyptic number.

166610005165651 is a deficient number, since it is larger than the sum of its proper divisors (7283972600429).

166610005165651 is a wasteful number, since it uses less digits than its factorization.

166610005165651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136215.

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 166610005165651 in words is "one hundred sixty-six trillion, six hundred ten billion, five million, one hundred sixty-five thousand, six hundred fifty-one".