166656227583 has 8 divisors (see below), whose sum is σ = 224499111088. Its totient is φ = 109958747904.

The previous prime is 166656227567. The next prime is 166656227593. The reversal of 166656227583 is 385722656661.

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

It is not a de Polignac number, because 166656227583 - 2⁴ = 166656227567 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 (166656227593) 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, 286350616 + ... + 286351197.

It is an arithmetic number, because the mean of its divisors is an integer number (28062388886).

Almost surely, 2^166656227583 is an apocalyptic number.

166656227583 is a deficient number, since it is larger than the sum of its proper divisors (57842883505).

166656227583 is an equidigital number, since it uses as much as digits as its factorization.

166656227583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572701913.

The product of its digits is 21772800, while the sum is 57.

The spelling of 166656227583 in words is "one hundred sixty-six billion, six hundred fifty-six million, two hundred twenty-seven thousand, five hundred eighty-three".