166670025189973 has 4 divisors (see below), whose sum is σ = 172046477615488. Its totient is φ = 161293572764460.

The previous prime is 166670025189971. The next prime is 166670025190001. The reversal of 166670025189973 is 379981520076661.

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 a cyclic number.

It is not a de Polignac number, because 166670025189973 - 2¹ = 166670025189971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166670025189971) 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, 2688226212711 + ... + 2688226212772.

It is an arithmetic number, because the mean of its divisors is an integer number (43011619403872).

Almost surely, 2^{166670025189973} is an apocalyptic number.

It is an amenable number.

166670025189973 is a deficient number, since it is larger than the sum of its proper divisors (5376452425515).

166670025189973 is an equidigital number, since it uses as much as digits as its factorization.

166670025189973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5376452425514.

The product of its (nonzero) digits is 205752960, while the sum is 70.

The spelling of 166670025189973 in words is "one hundred sixty-six trillion, six hundred seventy billion, twenty-five million, one hundred eighty-nine thousand, nine hundred seventy-three".