164243137622328 has 24 divisors (see below), whose sum is σ = 444825164394000. Its totient is φ = 54747712540752.

The previous prime is 164243137622321. The next prime is 164243137622357. The reversal of 164243137622328 is 823226731342461.

It is a happy number.

164243137622328 is a `hidden beast` number, since 1 + 6 + 4 + 2 + 4 + 3 + 1 + 3 + 7 + 622 + 3 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164243137622321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1140577344528 + ... + 1140577344671.

It is an arithmetic number, because the mean of its divisors is an integer number (18534381849750).

Almost surely, 2^{164243137622328} is an apocalyptic number.

164243137622328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

164243137622328 is an abundant number, since it is smaller than the sum of its proper divisors (280582026771672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164243137622328 is a wasteful number, since it uses less digits than its factorization.

164243137622328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281154689211 (or 2281154689204 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 54.

Adding to 164243137622328 its reverse (823226731342461), we get a palindrome (987469868964789).

The spelling of 164243137622328 in words is "one hundred sixty-four trillion, two hundred forty-three billion, one hundred thirty-seven million, six hundred twenty-two thousand, three hundred twenty-eight".