166108663629405 has 32 divisors (see below), whose sum is σ = 337490618169600. Its totient is φ = 75935389087296.

The previous prime is 166108663629397. The next prime is 166108663629449. The reversal of 166108663629405 is 504926366801661.

166108663629405 is a `hidden beast` number, since 1 + 6 + 6 + 108 + 6 + 63 + 62 + 9 + 405 = 666.

It is not a de Polignac number, because 166108663629405 - 2³ = 166108663629397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87888180870 + ... + 87888182759.

It is an arithmetic number, because the mean of its divisors is an integer number (10546581817800).

Almost surely, 2^{166108663629405} is an apocalyptic number.

166108663629405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166108663629405 is an abundant number, since it is smaller than the sum of its proper divisors (171381954540195).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166108663629405 is a wasteful number, since it uses less digits than its factorization.

166108663629405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175776363650 (or 175776363644 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 63.

The spelling of 166108663629405 in words is "one hundred sixty-six trillion, one hundred eight billion, six hundred sixty-three million, six hundred twenty-nine thousand, four hundred five".