164340502022405 has 8 divisors (see below), whose sum is σ = 197208684773784. Its totient is φ = 131472346720000.

The previous prime is 164340502022399. The next prime is 164340502022407. The reversal of 164340502022405 is 504220205043461.

It can be written as a sum of positive squares in 4 ways, for example, as 2429714032516 + 161910787989889 = 1558754^2 + 12724417^2 .

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

It is not a de Polignac number, because 164340502022405 - 2⁸ = 164340502022149 is a prime.

It is a super-2 number, since 2×164340502022405² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164340502022407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10138265 + ... + 20771745.

It is an arithmetic number, because the mean of its divisors is an integer number (24651085596723).

Almost surely, 2^{164340502022405} is an apocalyptic number.

It is an amenable number.

164340502022405 is a deficient number, since it is larger than the sum of its proper divisors (32868182751379).

164340502022405 is a wasteful number, since it uses less digits than its factorization.

164340502022405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13724487.

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 164340502022405 its reverse (504220205043461), we get a palindrome (668560707065866).

The spelling of 164340502022405 in words is "one hundred sixty-four trillion, three hundred forty billion, five hundred two million, twenty-two thousand, four hundred five".