43550555635243 has 8 divisors (see below), whose sum is σ = 45058273472880. Its totient is φ = 42043236100320.

The previous prime is 43550555635231. The next prime is 43550555635273. The reversal of 43550555635243 is 34253655505534.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43550555635243 - 2⁴⁵ = 8366183546411 is a prime.

It is a super-2 number, since 2×43550555635243² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43550555635273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99353205 + ... + 99790582.

It is an arithmetic number, because the mean of its divisors is an integer number (5632284184110).

Almost surely, 2^{43550555635243} is an apocalyptic number.

43550555635243 is a deficient number, since it is larger than the sum of its proper divisors (1507717837637).

43550555635243 is a wasteful number, since it uses less digits than its factorization.

43550555635243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199151357.

The product of its (nonzero) digits is 81000000, while the sum is 55.

The spelling of 43550555635243 in words is "forty-three trillion, five hundred fifty billion, five hundred fifty-five million, six hundred thirty-five thousand, two hundred forty-three".