166792193604 has 81 divisors (see below), whose sum is σ = 437980997181. Its totient is φ = 55575344160.

The previous prime is 166792193573. The next prime is 166792193641. The reversal of 166792193604 is 406391297661.

The square root of 166792193604 is 408402.

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

166792193604 is a `hidden beast` number, since 1 + 6 + 6 + 7 + 9 + 21 + 9 + 3 + 604 = 666.

166792193604 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 only one way, i.e., 132296004 + 166659897600 = 11502^2 + 408240^2 .

It is a tau number, because it is divible by the number of its divisors (81).

It is a Harshad number since it is a multiple of its sum of digits (54).

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 26 ways as a sum of consecutive naturals, for example, 66159864 + ... + 66162384.

Almost surely, 2^166792193604 is an apocalyptic number.

166792193604 is the 408402-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166792193604

166792193604 is an abundant number, since it is smaller than the sum of its proper divisors (271188803577).

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

166792193604 is an frugal number, since it uses more digits than its factorization.

166792193604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5070 (or 2526 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 166792193604 in words is "one hundred sixty-six billion, seven hundred ninety-two million, one hundred ninety-three thousand, six hundred four".