164653453566 has 80 divisors (see below), whose sum is σ = 421822494720. Its totient is φ = 47024848080.

The previous prime is 164653453519. The next prime is 164653453589. The reversal of 164653453566 is 665354356461.

164653453566 is a `hidden beast` number, since 1 + 6 + 4 + 6 + 534 + 53 + 56 + 6 = 666.

164653453566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×164653453566² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 2910175 + ... + 2966213.

It is an arithmetic number, because the mean of its divisors is an integer number (5272781184).

Almost surely, 2^164653453566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164653453566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210911247360).

164653453566 is an abundant number, since it is smaller than the sum of its proper divisors (257169041154).

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

164653453566 is a wasteful number, since it uses less digits than its factorization.

164653453566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58651 (or 58642 counting only the distinct ones).

The product of its digits is 23328000, while the sum is 54.

The spelling of 164653453566 in words is "one hundred sixty-four billion, six hundred fifty-three million, four hundred fifty-three thousand, five hundred sixty-six".