164205045953 has 4 divisors (see below), whose sum is σ = 176836203348. Its totient is φ = 151573888560.

The previous prime is 164205045947. The next prime is 164205045959. The reversal of 164205045953 is 359540502461.

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 (164205045947) and next prime (164205045959).

It can be written as a sum of positive squares in 2 ways, for example, as 76830415489 + 87374630464 = 277183^2 + 295592^2 .

It is a cyclic number.

It is not a de Polignac number, because 164205045953 - 2¹⁶ = 164204980417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164205045959) 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, 6315578678 + ... + 6315578703.

It is an arithmetic number, because the mean of its divisors is an integer number (44209050837).

Almost surely, 2^164205045953 is an apocalyptic number.

164205045953 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

164205045953 is a deficient number, since it is larger than the sum of its proper divisors (12631157395).

164205045953 is a wasteful number, since it uses less digits than its factorization.

164205045953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12631157394.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 164205045953 in words is "one hundred sixty-four billion, two hundred five million, forty-five thousand, nine hundred fifty-three".