42782158693 has 2 divisors, whose sum is σ = 42782158694. Its totient is φ = 42782158692.

The previous prime is 42782158687. The next prime is 42782158763. The reversal of 42782158693 is 39685128724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24275821249 + 18506337444 = 155807^2 + 136038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42782158693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42782158663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21391079346 + 21391079347.

It is an arithmetic number, because the mean of its divisors is an integer number (21391079347).

Almost surely, 2^42782158693 is an apocalyptic number.

It is an amenable number.

42782158693 is a deficient number, since it is larger than the sum of its proper divisors (1).

42782158693 is an equidigital number, since it uses as much as digits as its factorization.

42782158693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 55.

The spelling of 42782158693 in words is "forty-two billion, seven hundred eighty-two million, one hundred fifty-eight thousand, six hundred ninety-three".