166657174472 has 32 divisors (see below), whose sum is σ = 314189959320. Its totient is φ = 82874204160.

The previous prime is 166657174469. The next prime is 166657174493. The reversal of 166657174472 is 274471756661.

166657174472 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 4 ways, for example, as 166295946436 + 361228036 = 407794^2 + 19006^2 .

It is a super-2 number, since 2×166657174472² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 1254668 + ... + 1381124.

Almost surely, 2^166657174472 is an apocalyptic number.

It is an amenable number.

166657174472 is a deficient number, since it is larger than the sum of its proper divisors (147532784848).

166657174472 is a wasteful number, since it uses less digits than its factorization.

166657174472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127361 (or 127357 counting only the distinct ones).

The product of its digits is 11854080, while the sum is 56.

The spelling of 166657174472 in words is "one hundred sixty-six billion, six hundred fifty-seven million, one hundred seventy-four thousand, four hundred seventy-two".