1664823321162 has 32 divisors (see below), whose sum is σ = 3818949557760. Its totient is φ = 537039780480.

The previous prime is 1664823321071. The next prime is 1664823321163. The reversal of 1664823321162 is 2611233284661.

1664823321162 is a `hidden beast` number, since 1 + 6 + 6 + 482 + 3 + 3 + 2 + 1 + 162 = 666.

It is not an unprimeable number, because it can be changed into a prime (1664823321163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497257383 + ... + 497260730.

It is an arithmetic number, because the mean of its divisors is an integer number (119342173680).

Almost surely, 2^{1664823321162} is an apocalyptic number.

1664823321162 is an abundant number, since it is smaller than the sum of its proper divisors (2154126236598).

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

1664823321162 is a wasteful number, since it uses less digits than its factorization.

1664823321162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994518155 (or 994518149 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The spelling of 1664823321162 in words is "one trillion, six hundred sixty-four billion, eight hundred twenty-three million, three hundred twenty-one thousand, one hundred sixty-two".