166665528533530 has 192 divisors, whose sum is σ = 334621905995520. Its totient is φ = 59717543528448.

The previous prime is 166665528533527. The next prime is 166665528533597. The reversal of 166665528533530 is 35335825566661.

166665528533530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3255605614 + ... + 3255656806.

It is an arithmetic number, because the mean of its divisors is an integer number (1742822427060).

Almost surely, 2^{166665528533530} is an apocalyptic number.

166665528533530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166665528533530 is an abundant number, since it is smaller than the sum of its proper divisors (167956377461990).

166665528533530 is a wasteful number, since it uses less digits than its factorization.

166665528533530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51705 (or 51692 counting only the distinct ones).

The product of its (nonzero) digits is 349920000, while the sum is 64.

The spelling of 166665528533530 in words is "one hundred sixty-six trillion, six hundred sixty-five billion, five hundred twenty-eight million, five hundred thirty-three thousand, five hundred thirty".