164138887879 has 16 divisors (see below), whose sum is σ = 170139664800. Its totient is φ = 158161175424.

The previous prime is 164138887819. The next prime is 164138887967. The reversal of 164138887879 is 978788831461.

It is a cyclic number.

It is not a de Polignac number, because 164138887879 - 2¹⁹ = 164138363591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164138887819) 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, 58682509 + ... + 58685305.

It is an arithmetic number, because the mean of its divisors is an integer number (10633729050).

Almost surely, 2^164138887879 is an apocalyptic number.

164138887879 is a deficient number, since it is larger than the sum of its proper divisors (6000776921).

164138887879 is a wasteful number, since it uses less digits than its factorization.

164138887879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6162.

The product of its digits is 130056192, while the sum is 70.

The spelling of 164138887879 in words is "one hundred sixty-four billion, one hundred thirty-eight million, eight hundred eighty-seven thousand, eight hundred seventy-nine".