166251444122 has 16 divisors (see below), whose sum is σ = 263975833440. Its totient is φ = 78392820912.

The previous prime is 166251444089. The next prime is 166251444127. The reversal of 166251444122 is 221444152661.

It is not an unprimeable number, because it can be changed into a prime (166251444127) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 33327788 + ... + 33332775.

It is an arithmetic number, because the mean of its divisors is an integer number (16498489590).

Almost surely, 2^166251444122 is an apocalyptic number.

166251444122 is a deficient number, since it is larger than the sum of its proper divisors (97724389318).

166251444122 is a wasteful number, since it uses less digits than its factorization.

166251444122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66660637.

The product of its digits is 92160, while the sum is 38.

Adding to 166251444122 its reverse (221444152661), we get a palindrome (387695596783).

The spelling of 166251444122 in words is "one hundred sixty-six billion, two hundred fifty-one million, four hundred forty-four thousand, one hundred twenty-two".