5581466173440 has 408 divisors, whose sum is σ = 19872267799488. Its totient is φ = 1448135884800.

The previous prime is 5581466173433. The next prime is 5581466173453. The reversal of 5581466173440 is 443716641855.

5581466173440 is a `hidden beast` number, since 5 + 5 + 8 + 1 + 466 + 173 + 4 + 4 + 0 = 666.

It is a super-2 number, since 2×5581466173440² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109091865 + ... + 109143015.

Almost surely, 2^{5581466173440} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5581466173440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9936133899744).

5581466173440 is an abundant number, since it is smaller than the sum of its proper divisors (14290801626048).

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

5581466173440 is an equidigital number, since it uses as much as digits as its factorization.

5581466173440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51231 (or 51198 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 5581466173440 in words is "five trillion, five hundred eighty-one billion, four hundred sixty-six million, one hundred seventy-three thousand, four hundred forty".