164131672623 has 4 divisors (see below), whose sum is σ = 218842230168. Its totient is φ = 109421115080.

The previous prime is 164131672589. The next prime is 164131672643. The reversal of 164131672623 is 326276131461.

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 164131672623 - 2⁶ = 164131672559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164131672643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27355278768 + ... + 27355278773.

It is an arithmetic number, because the mean of its divisors is an integer number (54710557542).

Almost surely, 2^164131672623 is an apocalyptic number.

164131672623 is a deficient number, since it is larger than the sum of its proper divisors (54710557545).

164131672623 is an equidigital number, since it uses as much as digits as its factorization.

164131672623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54710557544.

The product of its digits is 217728, while the sum is 42.

The spelling of 164131672623 in words is "one hundred sixty-four billion, one hundred thirty-one million, six hundred seventy-two thousand, six hundred twenty-three".