164406442155203 has 32 divisors (see below), whose sum is σ = 175595656896000. Its totient is φ = 153581867112960.

The previous prime is 164406442155199. The next prime is 164406442155209. The reversal of 164406442155203 is 302551244604461.

It is a cyclic number.

It is not a de Polignac number, because 164406442155203 - 2² = 164406442155199 is a prime.

It is a super-3 number, since 3×164406442155203³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164406442155209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 658821548 + ... + 659071046.

It is an arithmetic number, because the mean of its divisors is an integer number (5487364278000).

Almost surely, 2^{164406442155203} is an apocalyptic number.

164406442155203 is a deficient number, since it is larger than the sum of its proper divisors (11189214740797).

164406442155203 is a wasteful number, since it uses less digits than its factorization.

164406442155203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252059.

The product of its (nonzero) digits is 2764800, while the sum is 47.

Adding to 164406442155203 its reverse (302551244604461), we get a palindrome (466957686759664).

The spelling of 164406442155203 in words is "one hundred sixty-four trillion, four hundred six billion, four hundred forty-two million, one hundred fifty-five thousand, two hundred three".