166132985472 has 160 divisors (see below), whose sum is σ = 494682170400. Its totient is φ = 55347079680.

The previous prime is 166132985471. The next prime is 166132985483. The reversal of 166132985472 is 274589231661.

It is a happy number.

166132985472 is a `hidden beast` number, since 1 + 6 + 6 + 1 + 3 + 2 + 98 + 547 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (166132985471) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26321197 + ... + 26327507.

It is an arithmetic number, because the mean of its divisors is an integer number (3091763565).

Almost surely, 2^166132985472 is an apocalyptic number.

166132985472 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 166132985472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247341085200).

166132985472 is an abundant number, since it is smaller than the sum of its proper divisors (328549184928).

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

166132985472 is an equidigital number, since it uses as much as digits as its factorization.

166132985472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8876 (or 8855 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 166132985472 in words is "one hundred sixty-six billion, one hundred thirty-two million, nine hundred eighty-five thousand, four hundred seventy-two".