180166551389472 has 96 divisors (see below), whose sum is σ = 477433633223232. Its totient is φ = 59484720963584.

The previous prime is 180166551389423. The next prime is 180166551389507. The reversal of 180166551389472 is 274983155661081.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62870308 + ... + 65673500.

It is an arithmetic number, because the mean of its divisors is an integer number (4973267012742).

It is a 1-persistent number, because it is pandigital, but 2⋅180166551389472 = 360333102778944 is not.

Almost surely, 2^{180166551389472} is an apocalyptic number.

180166551389472 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 180166551389472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238716816611616).

180166551389472 is an abundant number, since it is smaller than the sum of its proper divisors (297267081833760).

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

180166551389472 is a wasteful number, since it uses less digits than its factorization.

180166551389472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809570 (or 2809562 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 66.

The spelling of 180166551389472 in words is "one hundred eighty trillion, one hundred sixty-six billion, five hundred fifty-one million, three hundred eighty-nine thousand, four hundred seventy-two".