166812015922 has 4 divisors (see below), whose sum is σ = 250218023886. Its totient is φ = 83406007960.

The previous prime is 166812015917. The next prime is 166812015941. The reversal of 166812015922 is 229510218661.

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

It can be written as a sum of positive squares in only one way, i.e., 121221652561 + 45590363361 = 348169^2 + 213519^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41703003979 + ... + 41703003982.

Almost surely, 2^166812015922 is an apocalyptic number.

166812015922 is a deficient number, since it is larger than the sum of its proper divisors (83406007964).

166812015922 is an equidigital number, since it uses as much as digits as its factorization.

166812015922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83406007963.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 166812015922 in words is "one hundred sixty-six billion, eight hundred twelve million, fifteen thousand, nine hundred twenty-two".