164456961573 has 16 divisors (see below), whose sum is σ = 219840515136. Its totient is φ = 109355796480.

The previous prime is 164456961541. The next prime is 164456961577. The reversal of 164456961573 is 375169654461.

It is a happy number.

It is not a de Polignac number, because 164456961573 - 2⁵ = 164456961541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164456961577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8612965 + ... + 8632037.

It is an arithmetic number, because the mean of its divisors is an integer number (13740032196).

Almost surely, 2^164456961573 is an apocalyptic number.

It is an amenable number.

164456961573 is a deficient number, since it is larger than the sum of its proper divisors (55383553563).

164456961573 is a wasteful number, since it uses less digits than its factorization.

164456961573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26324.

The product of its digits is 16329600, while the sum is 57.

The spelling of 164456961573 in words is "one hundred sixty-four billion, four hundred fifty-six million, nine hundred sixty-one thousand, five hundred seventy-three".