166206150730 has 8 divisors (see below), whose sum is σ = 299171071332. Its totient is φ = 66482460288.

The previous prime is 166206150709. The next prime is 166206150731. The reversal of 166206150730 is 37051602661.

It can be written as a sum of positive squares in 2 ways, for example, as 156501733609 + 9704417121 = 395603^2 + 98511^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 166206150730.

It is not an unprimeable number, because it can be changed into a prime (166206150731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8310307527 + ... + 8310307546.

Almost surely, 2^166206150730 is an apocalyptic number.

166206150730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166206150730 is a deficient number, since it is larger than the sum of its proper divisors (132964920602).

166206150730 is a wasteful number, since it uses less digits than its factorization.

166206150730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16620615080.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 166206150730 in words is "one hundred sixty-six billion, two hundred six million, one hundred fifty thousand, seven hundred thirty".