164645414112143 has 4 divisors (see below), whose sum is σ = 164645466839880. Its totient is φ = 164645361384408.

The previous prime is 164645414112077. The next prime is 164645414112149. The reversal of 164645414112143 is 341211414546461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164645414112143 - 2¹² = 164645414108047 is a prime.

It is a super-2 number, since 2×164645414112143² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164645414112149) 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, 21363953 + ... + 28030506.

It is an arithmetic number, because the mean of its divisors is an integer number (41161366709970).

Almost surely, 2^{164645414112143} is an apocalyptic number.

164645414112143 is a deficient number, since it is larger than the sum of its proper divisors (52727737).

164645414112143 is an equidigital number, since it uses as much as digits as its factorization.

164645414112143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52727736.

The product of its digits is 1105920, while the sum is 47.

The spelling of 164645414112143 in words is "one hundred sixty-four trillion, six hundred forty-five billion, four hundred fourteen million, one hundred twelve thousand, one hundred forty-three".