65443068916040 has 32 divisors (see below), whose sum is σ = 147260795922360. Its totient is φ = 26174758080000.

The previous prime is 65443068916039. The next prime is 65443068916151. The reversal of 65443068916040 is 4061986034456.

It can be written as a sum of positive squares in 4 ways, for example, as 63228037979236 + 2215030936804 = 7951606^2 + 1488298^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76742111 + ... + 77590190.

Almost surely, 2^{65443068916040} is an apocalyptic number.

It is an amenable number.

65443068916040 is an abundant number, since it is smaller than the sum of its proper divisors (81817727006320).

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

65443068916040 is a wasteful number, since it uses less digits than its factorization.

65443068916040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154342913 (or 154342909 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 56.

The spelling of 65443068916040 in words is "sixty-five trillion, four hundred forty-three billion, sixty-eight million, nine hundred sixteen thousand, forty".