43305642555243 has 32 divisors (see below), whose sum is σ = 61690751553024. Its totient is φ = 26956253356032.

The previous prime is 43305642555187. The next prime is 43305642555281. The reversal of 43305642555243 is 34255524650334.

It is a happy number.

It is not a de Polignac number, because 43305642555243 - 2⁸ = 43305642554987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43305642655243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 261355 + ... + 9310187.

It is an arithmetic number, because the mean of its divisors is an integer number (1927835986032).

Almost surely, 2^{43305642555243} is an apocalyptic number.

43305642555243 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

43305642555243 is a deficient number, since it is larger than the sum of its proper divisors (18385108997781).

43305642555243 is a wasteful number, since it uses less digits than its factorization.

43305642555243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9050515.

The product of its (nonzero) digits is 25920000, while the sum is 51.

The spelling of 43305642555243 in words is "forty-three trillion, three hundred five billion, six hundred forty-two million, five hundred fifty-five thousand, two hundred forty-three".