166132985473 has 64 divisors (see below), whose sum is σ = 214405632000. Its totient is φ = 125940552192.

The previous prime is 166132985471. The next prime is 166132985483. The reversal of 166132985473 is 374589231661.

It is a happy number.

It is not a de Polignac number, because 166132985473 - 2¹ = 166132985471 is a prime.

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61099408 + ... + 61102126.

It is an arithmetic number, because the mean of its divisors is an integer number (3350088000).

Almost surely, 2^166132985473 is an apocalyptic number.

166132985473 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

166132985473 is a deficient number, since it is larger than the sum of its proper divisors (48272646527).

166132985473 is a wasteful number, since it uses less digits than its factorization.

166132985473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931 (or 2905 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 55.

The spelling of 166132985473 in words is "one hundred sixty-six billion, one hundred thirty-two million, nine hundred eighty-five thousand, four hundred seventy-three".