164455052021 has 8 divisors (see below), whose sum is σ = 178760633184. Its totient is φ = 150385926960.

The previous prime is 164455051967. The next prime is 164455052033. The reversal of 164455052021 is 120250554461.

164455052021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 164455052021 - 2¹⁰ = 164455050997 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 (164455052221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59112575 + ... + 59115356.

It is an arithmetic number, because the mean of its divisors is an integer number (22345079148).

Almost surely, 2^164455052021 is an apocalyptic number.

It is an amenable number.

164455052021 is a deficient number, since it is larger than the sum of its proper divisors (14305581163).

164455052021 is a wasteful number, since it uses less digits than its factorization.

164455052021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118228051.

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 164455052021 in words is "one hundred sixty-four billion, four hundred fifty-five million, fifty-two thousand, twenty-one".