166453532500 has 30 divisors (see below), whose sum is σ = 364000590338. Its totient is φ = 66581412000.

The previous prime is 166453532489. The next prime is 166453532513. The reversal of 166453532500 is 5235354661.

166453532500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 54771913156 + 111681619344 = 234034^2 + 334188^2 .

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 33288207 + ... + 33293206.

Almost surely, 2^166453532500 is an apocalyptic number.

166453532500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166453532500 is an abundant number, since it is smaller than the sum of its proper divisors (197547057838).

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

166453532500 is an equidigital number, since it uses as much as digits as its factorization.

166453532500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66581437 (or 66581420 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 166453532500 in words is "one hundred sixty-six billion, four hundred fifty-three million, five hundred thirty-two thousand, five hundred".