166163644468 has 24 divisors (see below), whose sum is σ = 306772704000. Its totient is φ = 78533779968.

The previous prime is 166163644441. The next prime is 166163644469. The reversal of 166163644468 is 864446361661.

It is a super-2 number, since 2×166163644468² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166163644469) 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, 2400580 + ... + 2468827.

It is an arithmetic number, because the mean of its divisors is an integer number (12782196000).

Almost surely, 2^166163644468 is an apocalyptic number.

It is an amenable number.

166163644468 is a deficient number, since it is larger than the sum of its proper divisors (140609059532).

166163644468 is a wasteful number, since it uses less digits than its factorization.

166163644468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4869879 (or 4869877 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 55.

The spelling of 166163644468 in words is "one hundred sixty-six billion, one hundred sixty-three million, six hundred forty-four thousand, four hundred sixty-eight".