164345440240525 has 48 divisors (see below), whose sum is σ = 211409204659200. Its totient is φ = 126585266895360.

The previous prime is 164345440240507. The next prime is 164345440240549. The reversal of 164345440240525 is 525042044543461.

It is not a de Polignac number, because 164345440240525 - 2³⁹ = 163795684426637 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 3982856044 + ... + 3982897306.

It is an arithmetic number, because the mean of its divisors is an integer number (4404358430400).

Almost surely, 2^{164345440240525} is an apocalyptic number.

It is an amenable number.

164345440240525 is a deficient number, since it is larger than the sum of its proper divisors (47063764418675).

164345440240525 is a wasteful number, since it uses less digits than its factorization.

164345440240525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56638 (or 56633 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 49.

Adding to 164345440240525 its reverse (525042044543461), we get a palindrome (689387484783986).

The spelling of 164345440240525 in words is "one hundred sixty-four trillion, three hundred forty-five billion, four hundred forty million, two hundred forty thousand, five hundred twenty-five".