166043745015 has 16 divisors (see below), whose sum is σ = 265718157696. Its totient is φ = 88540608800.

The previous prime is 166043745013. The next prime is 166043745037. The reversal of 166043745015 is 510547340661.

It is not a de Polignac number, because 166043745015 - 2¹ = 166043745013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166043745011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 917721 + ... + 1083650.

It is an arithmetic number, because the mean of its divisors is an integer number (16607384856).

Almost surely, 2^166043745015 is an apocalyptic number.

166043745015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166043745015 is a deficient number, since it is larger than the sum of its proper divisors (99674412681).

166043745015 is a wasteful number, since it uses less digits than its factorization.

166043745015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006910.

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 166043745015 in words is "one hundred sixty-six billion, forty-three million, seven hundred forty-five thousand, fifteen".