20196346166 has 4 divisors (see below), whose sum is σ = 30294519252. Its totient is φ = 10098173082.

The previous prime is 20196346099. The next prime is 20196346189. The reversal of 20196346166 is 66164369102.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5049086540 + ... + 5049086543.

It is an arithmetic number, because the mean of its divisors is an integer number (7573629813).

Almost surely, 2^20196346166 is an apocalyptic number.

20196346166 is a deficient number, since it is larger than the sum of its proper divisors (10098173086).

20196346166 is a wasteful number, since it uses less digits than its factorization.

20196346166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10098173085.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 20196346166 in words is "twenty billion, one hundred ninety-six million, three hundred forty-six thousand, one hundred sixty-six".