164348682221 has 8 divisors (see below), whose sum is σ = 165876427320. Its totient is φ = 162822223872.

The previous prime is 164348682181. The next prime is 164348682227. The reversal of 164348682221 is 122286843461.

It can be written as a sum of positive squares in 4 ways, for example, as 5036740900 + 159311941321 = 70970^2 + 399139^2 .

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 164348682221 - 2¹⁸ = 164348420077 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 (164348682227) 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, 64100 + ... + 576893.

It is an arithmetic number, because the mean of its divisors is an integer number (20734553415).

Almost surely, 2^164348682221 is an apocalyptic number.

It is an amenable number.

164348682221 is a deficient number, since it is larger than the sum of its proper divisors (1527745099).

164348682221 is a wasteful number, since it uses less digits than its factorization.

164348682221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643375.

The product of its digits is 884736, while the sum is 47.

The spelling of 164348682221 in words is "one hundred sixty-four billion, three hundred forty-eight million, six hundred eighty-two thousand, two hundred twenty-one".