164655345321 has 40 divisors (see below), whose sum is σ = 248379816960. Its totient is φ = 108694226592.

The previous prime is 164655345313. The next prime is 164655345331. The reversal of 164655345321 is 123543556461.

It is a happy number.

164655345321 is a `hidden beast` number, since 1 + 6 + 4 + 65 + 53 + 4 + 532 + 1 = 666.

164655345321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164655345321 - 2³ = 164655345313 is a prime.

It is a super-2 number, since 2×164655345321² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164655345331) by changing a digit.

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 in 39 ways as a sum of consecutive naturals, for example, 34379595 + ... + 34384383.

It is an arithmetic number, because the mean of its divisors is an integer number (6209495424).

Almost surely, 2^164655345321 is an apocalyptic number.

It is an amenable number.

164655345321 is a deficient number, since it is larger than the sum of its proper divisors (83724471639).

164655345321 is a wasteful number, since it uses less digits than its factorization.

164655345321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8875 (or 8866 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The spelling of 164655345321 in words is "one hundred sixty-four billion, six hundred fifty-five million, three hundred forty-five thousand, three hundred twenty-one".