164423706642115 has 4 divisors (see below), whose sum is σ = 197308447970544. Its totient is φ = 131538965313688.

The previous prime is 164423706642103. The next prime is 164423706642131. The reversal of 164423706642115 is 511246607324461.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164423706642115 is a prime.

It is a super-3 number, since 3×164423706642115³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16442370664207 + ... + 16442370664216.

It is an arithmetic number, because the mean of its divisors is an integer number (49327111992636).

Almost surely, 2^{164423706642115} is an apocalyptic number.

164423706642115 is a deficient number, since it is larger than the sum of its proper divisors (32884741328429).

164423706642115 is an equidigital number, since it uses as much as digits as its factorization.

164423706642115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32884741328428.

The product of its (nonzero) digits is 5806080, while the sum is 52.

The spelling of 164423706642115 in words is "one hundred sixty-four trillion, four hundred twenty-three billion, seven hundred six million, six hundred forty-two thousand, one hundred fifteen".