43021243636144 has 20 divisors (see below), whose sum is σ = 83360659129920. Its totient is φ = 21508815473600.

The previous prime is 43021243636121. The next prime is 43021243636243. The reversal of 43021243636144 is 44163634212034.

It is a self number, because there is not a number n which added to its sum of digits gives 43021243636144.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112700032 + ... + 113081119.

It is an arithmetic number, because the mean of its divisors is an integer number (4168032956496).

Almost surely, 2^{43021243636144} is an apocalyptic number.

It is an amenable number.

43021243636144 is a deficient number, since it is larger than the sum of its proper divisors (40339415493776).

43021243636144 is a wasteful number, since it uses less digits than its factorization.

43021243636144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225793068 (or 225793062 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 43.

Adding to 43021243636144 its reverse (44163634212034), we get a palindrome (87184877848178).

The spelling of 43021243636144 in words is "forty-three trillion, twenty-one billion, two hundred forty-three million, six hundred thirty-six thousand, one hundred forty-four".