43195678728 has 64 divisors (see below), whose sum is σ = 108567648000. Its totient is φ = 14321643072.

The previous prime is 43195678723. The next prime is 43195678759. The reversal of 43195678728 is 82787659134.

It is not an unprimeable number, because it can be changed into a prime (43195678723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3483243 + ... + 3495621.

It is an arithmetic number, because the mean of its divisors is an integer number (1696369500).

Almost surely, 2^43195678728 is an apocalyptic number.

It is an amenable number.

43195678728 is an abundant number, since it is smaller than the sum of its proper divisors (65371969272).

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

43195678728 is a wasteful number, since it uses less digits than its factorization.

43195678728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13154 (or 13150 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 60.

The spelling of 43195678728 in words is "forty-three billion, one hundred ninety-five million, six hundred seventy-eight thousand, seven hundred twenty-eight".