166850368517 has 16 divisors (see below), whose sum is σ = 201468470400. Its totient is φ = 134983817280.

The previous prime is 166850368463. The next prime is 166850368589. The reversal of 166850368517 is 715863058661.

It is a cyclic number.

It is not a de Polignac number, because 166850368517 - 2¹⁴ = 166850352133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166850308517) 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, 2296034 + ... + 2367587.

It is an arithmetic number, because the mean of its divisors is an integer number (12591779400).

Almost surely, 2^166850368517 is an apocalyptic number.

It is an amenable number.

166850368517 is a deficient number, since it is larger than the sum of its proper divisors (34618101883).

166850368517 is a wasteful number, since it uses less digits than its factorization.

166850368517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4663916.

The product of its (nonzero) digits is 7257600, while the sum is 56.

The spelling of 166850368517 in words is "one hundred sixty-six billion, eight hundred fifty million, three hundred sixty-eight thousand, five hundred seventeen".