166260062500 has 189 divisors, whose sum is σ = 424890596487. Its totient is φ = 56758800000.

The previous prime is 166260062471. The next prime is 166260062537. The reversal of 166260062500 is 5260062661.

The square root of 166260062500 is 407750.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 10 ways, for example, as 90070813924 + 76189248576 = 300118^2 + 276024^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 713562384 + ... + 713562616.

Almost surely, 2^166260062500 is an apocalyptic number.

166260062500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166260062500 is the 407750-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166260062500

166260062500 is an abundant number, since it is smaller than the sum of its proper divisors (258630533987).

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

166260062500 is an frugal number, since it uses more digits than its factorization.

166260062500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 166260062500 in words is "one hundred sixty-six billion, two hundred sixty million, sixty-two thousand, five hundred".