166670203537 has 8 divisors (see below), whose sum is σ = 168460612712. Its totient is φ = 164881267200.

The previous prime is 166670203517. The next prime is 166670203543. The reversal of 166670203537 is 735302076661.

166670203537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 15661020736 + 151009182801 = 125144^2 + 388599^2 .

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 166670203537 - 2¹⁹ = 166669679249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166670203507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139914 + ... + 594067.

It is an arithmetic number, because the mean of its divisors is an integer number (21057576589).

Almost surely, 2^166670203537 is an apocalyptic number.

It is an amenable number.

166670203537 is a deficient number, since it is larger than the sum of its proper divisors (1790409175).

166670203537 is an equidigital number, since it uses as much as digits as its factorization.

166670203537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736419.

The product of its (nonzero) digits is 952560, while the sum is 46.

The spelling of 166670203537 in words is "one hundred sixty-six billion, six hundred seventy million, two hundred three thousand, five hundred thirty-seven".