43618868064 has 60 divisors (see below), whose sum is σ = 128281886964. Its totient is φ = 14539621824.

The previous prime is 43618868057. The next prime is 43618868077. The reversal of 43618868064 is 46086881634.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 43618868064.

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 8411542 + ... + 8416725.

Almost surely, 2^43618868064 is an apocalyptic number.

It is an amenable number.

43618868064 is an abundant number, since it is smaller than the sum of its proper divisors (84663018900).

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

43618868064 is a wasteful number, since it uses less digits than its factorization.

43618868064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16828289 (or 16828272 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 54.

The spelling of 43618868064 in words is "forty-three billion, six hundred eighteen million, eight hundred sixty-eight thousand, sixty-four".