42784782065 has 16 divisors (see below), whose sum is σ = 54784272000. Its totient is φ = 31982159232.

The previous prime is 42784782043. The next prime is 42784782083. The reversal of 42784782065 is 56028748724.

It is a cyclic number.

It is not a de Polignac number, because 42784782065 - 2¹⁰ = 42784781041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42784781998 and 42784782016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3077765 + ... + 3091634.

It is an arithmetic number, because the mean of its divisors is an integer number (3424017000).

Almost surely, 2^42784782065 is an apocalyptic number.

It is an amenable number.

42784782065 is a deficient number, since it is larger than the sum of its proper divisors (11999489935).

42784782065 is a wasteful number, since it uses less digits than its factorization.

42784782065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6169496.

The product of its (nonzero) digits is 6021120, while the sum is 53.

The spelling of 42784782065 in words is "forty-two billion, seven hundred eighty-four million, seven hundred eighty-two thousand, sixty-five".