42782685517 has 16 divisors (see below), whose sum is σ = 51114087360. Its totient is φ = 35293046400.

The previous prime is 42782685511. The next prime is 42782685521. The reversal of 42782685517 is 71558628724.

It is a cyclic number.

It is not a de Polignac number, because 42782685517 - 2¹¹ = 42782683469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42782685511) 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, 2526984 + ... + 2543857.

It is an arithmetic number, because the mean of its divisors is an integer number (3194630460).

Almost surely, 2^42782685517 is an apocalyptic number.

It is an amenable number.

42782685517 is a deficient number, since it is larger than the sum of its proper divisors (8331401843).

42782685517 is a wasteful number, since it uses less digits than its factorization.

42782685517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5070924.

The product of its digits is 7526400, while the sum is 55.

The spelling of 42782685517 in words is "forty-two billion, seven hundred eighty-two million, six hundred eighty-five thousand, five hundred seventeen".