166706619984 has 30 divisors (see below), whose sum is σ = 466546999386. Its totient is φ = 55568873280.

The previous prime is 166706619983. The next prime is 166706620007. The reversal of 166706619984 is 489916607661.

166706619984 is a `hidden beast` number, since 1 + 6 + 6 + 7 + 0 + 6 + 619 + 9 + 8 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 163830657600 + 2875962384 = 404760^2 + 53628^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166706619983) 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 5 ways as a sum of consecutive naturals, for example, 578842287 + ... + 578842574.

Almost surely, 2^166706619984 is an apocalyptic number.

It is an amenable number.

166706619984 is an abundant number, since it is smaller than the sum of its proper divisors (299840379402).

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

166706619984 is a wasteful number, since it uses less digits than its factorization.

166706619984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157684875 (or 1157684866 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The spelling of 166706619984 in words is "one hundred sixty-six billion, seven hundred six million, six hundred nineteen thousand, nine hundred eighty-four".