164263640415656 has 16 divisors (see below), whose sum is σ = 308621605472640. Its totient is φ = 81964545622960.

The previous prime is 164263640415653. The next prime is 164263640415703. The reversal of 164263640415656 is 656514046362461.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 164263640415595 and 164263640415604.

It is not an unprimeable number, because it can be changed into a prime (164263640415653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20909318936 + ... + 20909326791.

It is an arithmetic number, because the mean of its divisors is an integer number (19288850342040).

Almost surely, 2^{164263640415656} is an apocalyptic number.

It is an amenable number.

164263640415656 is a deficient number, since it is larger than the sum of its proper divisors (144357965056984).

164263640415656 is a wasteful number, since it uses less digits than its factorization.

164263640415656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41818646224 (or 41818646220 counting only the distinct ones).

The product of its (nonzero) digits is 74649600, while the sum is 59.

The spelling of 164263640415656 in words is "one hundred sixty-four trillion, two hundred sixty-three billion, six hundred forty million, four hundred fifteen thousand, six hundred fifty-six".