166651055111001 has 8 divisors (see below), whose sum is σ = 222201678064320. Its totient is φ = 111100567782512.

The previous prime is 166651055110997. The next prime is 166651055111017. The reversal of 166651055111001 is 100111550156661.

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

It is a cyclic number.

It is not a de Polignac number, because 166651055111001 - 2² = 166651055110997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166651055111071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31003590 + ... + 35979503.

It is an arithmetic number, because the mean of its divisors is an integer number (27775209758040).

Almost surely, 2^{166651055111001} is an apocalyptic number.

It is an amenable number.

166651055111001 is a deficient number, since it is larger than the sum of its proper divisors (55550622953319).

166651055111001 is an equidigital number, since it uses as much as digits as its factorization.

166651055111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67812415.

The product of its (nonzero) digits is 27000, while the sum is 39.

The spelling of 166651055111001 in words is "one hundred sixty-six trillion, six hundred fifty-one billion, fifty-five million, one hundred eleven thousand, one".