166670203701 has 4 divisors (see below), whose sum is σ = 222226938272. Its totient is φ = 111113469132.

The previous prime is 166670203649. The next prime is 166670203703. The reversal of 166670203701 is 107302076661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 166670203701 - 2³¹ = 164522720053 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 166670203701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166670203703) 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, 27778367281 + ... + 27778367286.

It is an arithmetic number, because the mean of its divisors is an integer number (55556734568).

Almost surely, 2^166670203701 is an apocalyptic number.

It is an amenable number.

166670203701 is a deficient number, since it is larger than the sum of its proper divisors (55556734571).

166670203701 is an equidigital number, since it uses as much as digits as its factorization.

166670203701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55556734570.

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 166670203701 in words is "one hundred sixty-six billion, six hundred seventy million, two hundred three thousand, seven hundred one".