164553923437 has 2 divisors, whose sum is σ = 164553923438. Its totient is φ = 164553923436.

The previous prime is 164553923389. The next prime is 164553923531. The reversal of 164553923437 is 734329355461.

It is a happy number.

164553923437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144176646436 + 20377277001 = 379706^2 + 142749^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164553923437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164553923137) 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 as a sum of consecutive naturals, namely, 82276961718 + 82276961719.

It is an arithmetic number, because the mean of its divisors is an integer number (82276961719).

Almost surely, 2^164553923437 is an apocalyptic number.

It is an amenable number.

164553923437 is a deficient number, since it is larger than the sum of its proper divisors (1).

164553923437 is an equidigital number, since it uses as much as digits as its factorization.

164553923437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8164800, while the sum is 52.

The spelling of 164553923437 in words is "one hundred sixty-four billion, five hundred fifty-three million, nine hundred twenty-three thousand, four hundred thirty-seven".