43863809136 has 80 divisors (see below), whose sum is σ = 129960562944. Its totient is φ = 12488205312.

The previous prime is 43863809107. The next prime is 43863809153. The reversal of 43863809136 is 63190836834.

43863809136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135561 + ... + 325736.

Almost surely, 2^43863809136 is an apocalyptic number.

It is an amenable number.

43863809136 is an abundant number, since it is smaller than the sum of its proper divisors (86096753808).

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

43863809136 is a wasteful number, since it uses less digits than its factorization.

43863809136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461598 (or 461592 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 51.

The spelling of 43863809136 in words is "forty-three billion, eight hundred sixty-three million, eight hundred nine thousand, one hundred thirty-six".