164905959117 has 8 divisors (see below), whose sum is σ = 220464089824. Its totient is φ = 109642567248.

The previous prime is 164905959091. The next prime is 164905959131. The reversal of 164905959117 is 711959509461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164905959117 - 2¹² = 164905955021 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 (164905959157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73683403 + ... + 73685640.

It is an arithmetic number, because the mean of its divisors is an integer number (27558011228).

Almost surely, 2^164905959117 is an apocalyptic number.

It is an amenable number.

164905959117 is a deficient number, since it is larger than the sum of its proper divisors (55558130707).

164905959117 is a wasteful number, since it uses less digits than its factorization.

164905959117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147369419.

The product of its (nonzero) digits is 3061800, while the sum is 57.

The spelling of 164905959117 in words is "one hundred sixty-four billion, nine hundred five million, nine hundred fifty-nine thousand, one hundred seventeen".