166988930440 has 32 divisors (see below), whose sum is σ = 392060969280. Its totient is φ = 63891416512.

The previous prime is 166988930431. The next prime is 166988930443. The reversal of 166988930440 is 44039889661.

It is a happy number.

166988930440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (166988930443) 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 7 ways as a sum of consecutive naturals, for example, 90753934 + ... + 90755773.

It is an arithmetic number, because the mean of its divisors is an integer number (12251905290).

Almost surely, 2^166988930440 is an apocalyptic number.

166988930440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166988930440 is an abundant number, since it is smaller than the sum of its proper divisors (225072038840).

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

166988930440 is a wasteful number, since it uses less digits than its factorization.

166988930440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181509741 (or 181509737 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 58.

The spelling of 166988930440 in words is "one hundred sixty-six billion, nine hundred eighty-eight million, nine hundred thirty thousand, four hundred forty".