43039536540 has 768 divisors, whose sum is σ = 168206008320. Its totient is φ = 7936081920.

The previous prime is 43039536481. The next prime is 43039536541. The reversal of 43039536540 is 4563593034.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 43039536492 and 43039536501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43039536541) by changing a digit.

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 255 ways as a sum of consecutive naturals, for example, 223002684 + ... + 223002876.

It is an arithmetic number, because the mean of its divisors is an integer number (219018240).

Almost surely, 2^43039536540 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 43039536540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84103004160).

43039536540 is an abundant number, since it is smaller than the sum of its proper divisors (125166471780).

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

43039536540 is a wasteful number, since it uses less digits than its factorization.

43039536540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 42.

The spelling of 43039536540 in words is "forty-three billion, thirty-nine million, five hundred thirty-six thousand, five hundred forty".