43220781418 has 16 divisors (see below), whose sum is σ = 66234257280. Its totient is φ = 21143024896.

The previous prime is 43220781391. The next prime is 43220781431. The reversal of 43220781418 is 81418702234.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186378 + ... + 348106.

It is an arithmetic number, because the mean of its divisors is an integer number (4139641080).

Almost surely, 2^43220781418 is an apocalyptic number.

43220781418 is a deficient number, since it is larger than the sum of its proper divisors (23013475862).

43220781418 is a wasteful number, since it uses less digits than its factorization.

43220781418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164621.

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 43220781418 in words is "forty-three billion, two hundred twenty million, seven hundred eighty-one thousand, four hundred eighteen".