166404104603 has 8 divisors (see below), whose sum is σ = 181534757040. Its totient is φ = 151273953280.

The previous prime is 166404104599. The next prime is 166404104641. The reversal of 166404104603 is 306401404661.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 166404104603 - 2² = 166404104599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166404104803) 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, 1041851 + ... + 1190907.

It is an arithmetic number, because the mean of its divisors is an integer number (22691844630).

Almost surely, 2^166404104603 is an apocalyptic number.

166404104603 is a deficient number, since it is larger than the sum of its proper divisors (15130652437).

166404104603 is a wasteful number, since it uses less digits than its factorization.

166404104603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250557.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 166404104603 in words is "one hundred sixty-six billion, four hundred four million, one hundred four thousand, six hundred three".