75143408103440 has 20 divisors (see below), whose sum is σ = 174708423840684. Its totient is φ = 30057363241344.

The previous prime is 75143408103433. The next prime is 75143408103451. The reversal of 75143408103440 is 4430180434157.

It can be written as a sum of positive squares in 2 ways, for example, as 10771734049024 + 64371674054416 = 3282032^2 + 8023196^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 75143408103391 and 75143408103400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469646300567 + ... + 469646300726.

Almost surely, 2^{75143408103440} is an apocalyptic number.

It is an amenable number.

75143408103440 is an abundant number, since it is smaller than the sum of its proper divisors (99565015737244).

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

75143408103440 is a wasteful number, since it uses less digits than its factorization.

75143408103440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939292601306 (or 939292601300 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 44.

Adding to 75143408103440 its reverse (4430180434157), we get a palindrome (79573588537597).

The spelling of 75143408103440 in words is "seventy-five trillion, one hundred forty-three billion, four hundred eight million, one hundred three thousand, four hundred forty".