164123863593 has 16 divisors (see below), whose sum is σ = 219067106496. Its totient is φ = 109298329920.

The previous prime is 164123863543. The next prime is 164123863597. The reversal of 164123863593 is 395368321461.

It is a happy number.

It is not a de Polignac number, because 164123863593 - 2²¹ = 164121766441 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (164123863597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14146471 + ... + 14158067.

It is an arithmetic number, because the mean of its divisors is an integer number (13691694156).

Almost surely, 2^164123863593 is an apocalyptic number.

It is an amenable number.

164123863593 is a deficient number, since it is larger than the sum of its proper divisors (54943242903).

164123863593 is a wasteful number, since it uses less digits than its factorization.

164123863593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16264.

The product of its digits is 2799360, while the sum is 51.

The spelling of 164123863593 in words is "one hundred sixty-four billion, one hundred twenty-three million, eight hundred sixty-three thousand, five hundred ninety-three".