164387056129 has 4 divisors (see below), whose sum is σ = 164506785876. Its totient is φ = 164267326384.

The previous prime is 164387056123. The next prime is 164387056139. The reversal of 164387056129 is 921650783461.

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

It can be written as a sum of positive squares in 2 ways, for example, as 79044197904 + 85342858225 = 281148^2 + 292135^2 .

It is a cyclic number.

It is not a de Polignac number, because 164387056129 - 2¹¹ = 164387054081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164387056123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59862814 + ... + 59865559.

It is an arithmetic number, because the mean of its divisors is an integer number (41126696469).

It is a 1-persistent number, because it is pandigital, but 2⋅164387056129 = 328774112258 is not.

Almost surely, 2^164387056129 is an apocalyptic number.

It is an amenable number.

164387056129 is a deficient number, since it is larger than the sum of its proper divisors (119729747).

164387056129 is a wasteful number, since it uses less digits than its factorization.

164387056129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119729746.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 164387056129 in words is "one hundred sixty-four billion, three hundred eighty-seven million, fifty-six thousand, one hundred twenty-nine".