166105556079 has 8 divisors (see below), whose sum is σ = 222754272432. Its totient is φ = 110096938560.

The previous prime is 166105556069. The next prime is 166105556093. The reversal of 166105556079 is 970655501661.

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

It is not a de Polignac number, because 166105556079 - 2⁴ = 166105556063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166105556009) 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, 160024102 + ... + 160025139.

It is an arithmetic number, because the mean of its divisors is an integer number (27844284054).

Almost surely, 2^166105556079 is an apocalyptic number.

166105556079 is a deficient number, since it is larger than the sum of its proper divisors (56648716353).

166105556079 is a wasteful number, since it uses less digits than its factorization.

166105556079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320049417.

The product of its (nonzero) digits is 1701000, while the sum is 51.

The spelling of 166105556079 in words is "one hundred sixty-six billion, one hundred five million, five hundred fifty-six thousand, seventy-nine".