166653365824 has 63 divisors (see below), whose sum is σ = 363578116251. Its totient is φ = 75735200640.

The previous prime is 166653365807. The next prime is 166653365833. The reversal of 166653365824 is 428563356661.

The square root of 166653365824 is 408232.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 35922097 + ... + 35926735.

Almost surely, 2^166653365824 is an apocalyptic number.

166653365824 is the 408232-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166653365824

166653365824 is an abundant number, since it is smaller than the sum of its proper divisors (196924750427).

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

166653365824 is an frugal number, since it uses more digits than its factorization.

166653365824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9312 (or 4652 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 55.

The spelling of 166653365824 in words is "one hundred sixty-six billion, six hundred fifty-three million, three hundred sixty-five thousand, eight hundred twenty-four".