164540220303 has 8 divisors (see below), whose sum is σ = 219393827968. Its totient is φ = 109690046424.

The previous prime is 164540220289. The next prime is 164540220311. The reversal of 164540220303 is 303022045461.

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

It is not a de Polignac number, because 164540220303 - 2⁹ = 164540219791 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 (164540220323) 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, 744475 + ... + 939852.

It is an arithmetic number, because the mean of its divisors is an integer number (27424228496).

Almost surely, 2^164540220303 is an apocalyptic number.

164540220303 is a deficient number, since it is larger than the sum of its proper divisors (54853607665).

164540220303 is a wasteful number, since it uses less digits than its factorization.

164540220303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716893.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 164540220303 its reverse (303022045461), we get a palindrome (467562265764).

The spelling of 164540220303 in words is "one hundred sixty-four billion, five hundred forty million, two hundred twenty thousand, three hundred three".