66170700203 has 4 divisors (see below), whose sum is σ = 67102681968. Its totient is φ = 65238718440.

The previous prime is 66170700179. The next prime is 66170700223. The reversal of 66170700203 is 30200707166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66170700203 - 2²⁴ = 66153922987 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 66170700203.

It is not an unprimeable number, because it can be changed into a prime (66170700223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465990776 + ... + 465990917.

It is an arithmetic number, because the mean of its divisors is an integer number (16775670492).

Almost surely, 2^66170700203 is an apocalyptic number.

66170700203 is a deficient number, since it is larger than the sum of its proper divisors (931981765).

66170700203 is an equidigital number, since it uses as much as digits as its factorization.

66170700203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931981764.

The product of its (nonzero) digits is 10584, while the sum is 32.

The spelling of 66170700203 in words is "sixty-six billion, one hundred seventy million, seven hundred thousand, two hundred three".