164687138503 has 2 divisors, whose sum is σ = 164687138504. Its totient is φ = 164687138502.

The previous prime is 164687138477. The next prime is 164687138513. The reversal of 164687138503 is 305831786461.

It is a happy number.

164687138503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164687138503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164687138513) 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, 82343569251 + 82343569252.

It is an arithmetic number, because the mean of its divisors is an integer number (82343569252).

Almost surely, 2^164687138503 is an apocalyptic number.

164687138503 is a deficient number, since it is larger than the sum of its proper divisors (1).

164687138503 is an equidigital number, since it uses as much as digits as its factorization.

164687138503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 164687138503 in words is "one hundred sixty-four billion, six hundred eighty-seven million, one hundred thirty-eight thousand, five hundred three".