32400043540 has 12 divisors (see below), whose sum is σ = 68040091476. Its totient is φ = 12960017408.

The previous prime is 32400043519. The next prime is 32400043567. The reversal of 32400043540 is 4534000423.

It can be written as a sum of positive squares in 2 ways, for example, as 11874896784 + 20525146756 = 108972^2 + 143266^2 .

It is a congruent number.

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, 810001069 + ... + 810001108.

It is an arithmetic number, because the mean of its divisors is an integer number (5670007623).

Almost surely, 2^32400043540 is an apocalyptic number.

It is an amenable number.

32400043540 is an abundant number, since it is smaller than the sum of its proper divisors (35640047936).

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

32400043540 is a wasteful number, since it uses less digits than its factorization.

32400043540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620002186 (or 1620002184 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 32400043540 its reverse (4534000423), we get a palindrome (36934043963).

The spelling of 32400043540 in words is "thirty-two billion, four hundred million, forty-three thousand, five hundred forty".