42782833091 has 2 divisors, whose sum is σ = 42782833092. Its totient is φ = 42782833090.

The previous prime is 42782833087. The next prime is 42782833109. The reversal of 42782833091 is 19033828724.

It is a happy number.

Together with next prime (42782833109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42782833091 - 2² = 42782833087 is a prime.

It is a super-2 number, since 2×42782833091² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42782833031) by changing a digit.

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 as a sum of consecutive naturals, namely, 21391416545 + 21391416546.

It is an arithmetic number, because the mean of its divisors is an integer number (21391416546).

Almost surely, 2^42782833091 is an apocalyptic number.

42782833091 is a deficient number, since it is larger than the sum of its proper divisors (1).

42782833091 is an equidigital number, since it uses as much as digits as its factorization.

42782833091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 42782833091 in words is "forty-two billion, seven hundred eighty-two million, eight hundred thirty-three thousand, ninety-one".