43494477650 has 24 divisors (see below), whose sum is σ = 87122785764. Its totient is φ = 16059499200.

The previous prime is 43494477647. The next prime is 43494477721. The reversal of 43494477650 is 5677449434.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4773289921 + 38721187729 = 69089^2 + 196777^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43494477592 and 43494477601.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33456641 + ... + 33457940.

Almost surely, 2^43494477650 is an apocalyptic number.

43494477650 is an abundant number, since it is smaller than the sum of its proper divisors (43628308114).

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

43494477650 is a wasteful number, since it uses less digits than its factorization.

43494477650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66914606 (or 66914601 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 53.

The spelling of 43494477650 in words is "forty-three billion, four hundred ninety-four million, four hundred seventy-seven thousand, six hundred fifty".