166605930240 has 72 divisors (see below), whose sum is σ = 532097701968. Its totient is φ = 44428247040.

The previous prime is 166605930203. The next prime is 166605930247. The reversal of 166605930240 is 42039506661.

166605930240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166605930240² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166605930192 and 166605930201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166605930247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21689641 + ... + 21697320.

Almost surely, 2^166605930240 is an apocalyptic number.

166605930240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166605930240 is an abundant number, since it is smaller than the sum of its proper divisors (365491771728).

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

166605930240 is an equidigital number, since it uses as much as digits as its factorization.

166605930240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43386985 (or 43386971 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 166605930240 in words is "one hundred sixty-six billion, six hundred five million, nine hundred thirty thousand, two hundred forty".