164217440803 has 8 divisors (see below), whose sum is σ = 187252466688. Its totient is φ = 142668545664.

The previous prime is 164217440791. The next prime is 164217440851. The reversal of 164217440803 is 308044712461.

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

It is not a de Polignac number, because 164217440803 - 2²¹ = 164215343651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164217440603) 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, 371532451 + ... + 371532892.

It is an arithmetic number, because the mean of its divisors is an integer number (23406558336).

Almost surely, 2^164217440803 is an apocalyptic number.

164217440803 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

164217440803 is a deficient number, since it is larger than the sum of its proper divisors (23035025885).

164217440803 is a wasteful number, since it uses less digits than its factorization.

164217440803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743065373.

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 164217440803 in words is "one hundred sixty-four billion, two hundred seventeen million, four hundred forty thousand, eight hundred three".