166601111322000 has 160 divisors (see below), whose sum is σ = 541042583986944. Its totient is φ = 44102678400000.

The previous prime is 166601111321989. The next prime is 166601111322059. The reversal of 166601111322000 is 223111106661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100516876 + ... + 102160875.

Almost surely, 2^{166601111322000} is an apocalyptic number.

166601111322000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166601111322000 is an abundant number, since it is smaller than the sum of its proper divisors (374441472664944).

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

166601111322000 is a wasteful number, since it uses less digits than its factorization.

166601111322000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202677914 (or 202677898 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

Adding to 166601111322000 its reverse (223111106661), we get a palindrome (166824222428661).

The spelling of 166601111322000 in words is "one hundred sixty-six trillion, six hundred one billion, one hundred eleven million, three hundred twenty-two thousand".