166205017150516 has 24 divisors (see below), whose sum is σ = 293034451598280. Its totient is φ = 82481105989632.

The previous prime is 166205017150499. The next prime is 166205017150547. The reversal of 166205017150516 is 615051710502661.

It can be written as a sum of positive squares in 4 ways, for example, as 2313301070116 + 163891716080400 = 1520954^2 + 12802020^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24178735 + ... + 30282358.

It is an arithmetic number, because the mean of its divisors is an integer number (12209768816595).

Almost surely, 2^{166205017150516} is an apocalyptic number.

It is an amenable number.

166205017150516 is a deficient number, since it is larger than the sum of its proper divisors (126829434447764).

166205017150516 is a wasteful number, since it uses less digits than its factorization.

166205017150516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54466803 (or 54466801 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 46.

The spelling of 166205017150516 in words is "one hundred sixty-six trillion, two hundred five billion, seventeen million, one hundred fifty thousand, five hundred sixteen".