166551451452 has 48 divisors (see below), whose sum is σ = 431911226880. Its totient is φ = 55502857584.

The previous prime is 166551451439. The next prime is 166551451457. The reversal of 166551451452 is 254154155661.

166551451452 is a `hidden beast` number, since 1 + 6 + 6 + 55 + 145 + 1 + 452 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 166551451398 and 166551451407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166551451457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227133 + ... + 620235.

It is an arithmetic number, because the mean of its divisors is an integer number (8998150560).

Almost surely, 2^166551451452 is an apocalyptic number.

166551451452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166551451452 is an abundant number, since it is smaller than the sum of its proper divisors (265359775428).

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

166551451452 is a wasteful number, since it uses less digits than its factorization.

166551451452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397039 (or 397031 counting only the distinct ones).

The product of its digits is 720000, while the sum is 45.

The spelling of 166551451452 in words is "one hundred sixty-six billion, five hundred fifty-one million, four hundred fifty-one thousand, four hundred fifty-two".