166984546554 has 48 divisors (see below), whose sum is σ = 413744310720. Its totient is φ = 47680012800.

The previous prime is 166984546549. The next prime is 166984546559. The reversal of 166984546554 is 455645489661.

166984546554 is a `hidden beast` number, since 1 + 6 + 6 + 9 + 84 + 546 + 5 + 5 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (166984546549) and next prime (166984546559).

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 Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 166984546491 and 166984546500.

It is not an unprimeable number, because it can be changed into a prime (166984546559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212164 + ... + 615615.

It is an arithmetic number, because the mean of its divisors is an integer number (8619673140).

Almost surely, 2^166984546554 is an apocalyptic number.

166984546554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

166984546554 is an abundant number, since it is smaller than the sum of its proper divisors (246759764166).

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

166984546554 is a wasteful number, since it uses less digits than its factorization.

166984546554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829395 (or 829392 counting only the distinct ones).

The product of its digits is 124416000, while the sum is 63.

The spelling of 166984546554 in words is "one hundred sixty-six billion, nine hundred eighty-four million, five hundred forty-six thousand, five hundred fifty-four".