166866833537 has 8 divisors (see below), whose sum is σ = 183286224960. Its totient is φ = 151211134800.

The previous prime is 166866833533. The next prime is 166866833543. The reversal of 166866833537 is 735338668661.

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

It is a cyclic number.

It is not a de Polignac number, because 166866833537 - 2² = 166866833533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166866833537.

It is not an unprimeable number, because it can be changed into a prime (166866833533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190922714 + ... + 190923587.

It is an arithmetic number, because the mean of its divisors is an integer number (22910778120).

Almost surely, 2^166866833537 is an apocalyptic number.

It is an amenable number.

166866833537 is a deficient number, since it is larger than the sum of its proper divisors (16419391423).

166866833537 is a wasteful number, since it uses less digits than its factorization.

166866833537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381846343.

The product of its digits is 78382080, while the sum is 62.

The spelling of 166866833537 in words is "one hundred sixty-six billion, eight hundred sixty-six million, eight hundred thirty-three thousand, five hundred thirty-seven".