164124221243 has 4 divisors (see below), whose sum is σ = 164248653360. Its totient is φ = 163999789128.

The previous prime is 164124221237. The next prime is 164124221249. The reversal of 164124221243 is 342122421461.

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

It is an interprime number because it is at equal distance from previous prime (164124221237) and next prime (164124221249).

It is a cyclic number.

It is not a de Polignac number, because 164124221243 - 2²⁶ = 164057112379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164124221249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62214080 + ... + 62216717.

It is an arithmetic number, because the mean of its divisors is an integer number (41062163340).

Almost surely, 2^164124221243 is an apocalyptic number.

164124221243 is a deficient number, since it is larger than the sum of its proper divisors (124432117).

164124221243 is a wasteful number, since it uses less digits than its factorization.

164124221243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124432116.

The product of its digits is 18432, while the sum is 32.

The spelling of 164124221243 in words is "one hundred sixty-four billion, one hundred twenty-four million, two hundred twenty-one thousand, two hundred forty-three".