166392887472 has 160 divisors (see below), whose sum is σ = 552416309760. Its totient is φ = 46967973120.

The previous prime is 166392887471. The next prime is 166392887483. The reversal of 166392887472 is 274788293661.

166392887472 is a `hidden beast` number, since 1 + 6 + 63 + 9 + 28 + 87 + 472 = 666.

166392887472 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (166392887471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80479 + ... + 582462.

It is an arithmetic number, because the mean of its divisors is an integer number (3452601936).

Almost surely, 2^166392887472 is an apocalyptic number.

166392887472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166392887472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276208154880).

166392887472 is an abundant number, since it is smaller than the sum of its proper divisors (386023422288).

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

166392887472 is a wasteful number, since it uses less digits than its factorization.

166392887472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663048 (or 663036 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 166392887472 in words is "one hundred sixty-six billion, three hundred ninety-two million, eight hundred eighty-seven thousand, four hundred seventy-two".