164236560416421 has 8 divisors (see below), whose sum is σ = 218984371137984. Its totient is φ = 109489894986240.

The previous prime is 164236560416413. The next prime is 164236560416429. The reversal of 164236560416421 is 124614065632461.

It is an interprime number because it is at equal distance from previous prime (164236560416413) and next prime (164236560416429).

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

It is not a de Polignac number, because 164236560416421 - 2³ = 164236560416413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164236560416429) 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, 285988185 + ... + 286561886.

It is an arithmetic number, because the mean of its divisors is an integer number (27373046392248).

Almost surely, 2^{164236560416421} is an apocalyptic number.

It is an amenable number.

164236560416421 is a deficient number, since it is larger than the sum of its proper divisors (54747810721563).

164236560416421 is an equidigital number, since it uses as much as digits as its factorization.

164236560416421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572645691.

The product of its (nonzero) digits is 4976640, while the sum is 51.

The spelling of 164236560416421 in words is "one hundred sixty-four trillion, two hundred thirty-six billion, five hundred sixty million, four hundred sixteen thousand, four hundred twenty-one".