166119974536 has 192 divisors, whose sum is σ = 361465902000. Its totient is φ = 71195443200.

The previous prime is 166119974533. The next prime is 166119974557. The reversal of 166119974536 is 635479911661.

It can be written as a sum of positive squares in 8 ways, for example, as 60371438436 + 105748536100 = 245706^2 + 325190^2 .

It is a Harshad number since it is a multiple of its sum of digits (58).

It is not an unprimeable number, because it can be changed into a prime (166119974533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 155397010 + ... + 155398078.

Almost surely, 2^166119974536 is an apocalyptic number.

It is an amenable number.

166119974536 is an abundant number, since it is smaller than the sum of its proper divisors (195345927464).

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

166119974536 is a wasteful number, since it uses less digits than its factorization.

166119974536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224 (or 1189 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 58.

The spelling of 166119974536 in words is "one hundred sixty-six billion, one hundred nineteen million, nine hundred seventy-four thousand, five hundred thirty-six".