166505663514 has 8 divisors (see below), whose sum is σ = 333011327040. Its totient is φ = 55501887836.

The previous prime is 166505663507. The next prime is 166505663531. The reversal of 166505663514 is 415366505661.

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

166505663514 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13875471954 + ... + 13875471965.

It is an arithmetic number, because the mean of its divisors is an integer number (41626415880).

Almost surely, 2^166505663514 is an apocalyptic number.

166505663514 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

166505663514 is a wasteful number, since it uses less digits than its factorization.

166505663514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27750943924.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 166505663514 in words is "one hundred sixty-six billion, five hundred five million, six hundred sixty-three thousand, five hundred fourteen".