42682765787 has 2 divisors, whose sum is σ = 42682765788. Its totient is φ = 42682765786.

The previous prime is 42682765781. The next prime is 42682765799. The reversal of 42682765787 is 78756728624.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42682765787 is a prime.

It is not a weakly prime, because it can be changed into another prime (42682765781) 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, 21341382893 + 21341382894.

It is an arithmetic number, because the mean of its divisors is an integer number (21341382894).

Almost surely, 2^42682765787 is an apocalyptic number.

42682765787 is a deficient number, since it is larger than the sum of its proper divisors (1).

42682765787 is an equidigital number, since it uses as much as digits as its factorization.

42682765787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63221760, while the sum is 62.

The spelling of 42682765787 in words is "forty-two billion, six hundred eighty-two million, seven hundred sixty-five thousand, seven hundred eighty-seven".