42810643247 has 2 divisors, whose sum is σ = 42810643248. Its totient is φ = 42810643246.

The previous prime is 42810643243. The next prime is 42810643277. The reversal of 42810643247 is 74234601824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42810643247 - 2² = 42810643243 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42810643243) by changing a digit.

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 as a sum of consecutive naturals, namely, 21405321623 + 21405321624.

It is an arithmetic number, because the mean of its divisors is an integer number (21405321624).

Almost surely, 2^42810643247 is an apocalyptic number.

42810643247 is a deficient number, since it is larger than the sum of its proper divisors (1).

42810643247 is an equidigital number, since it uses as much as digits as its factorization.

42810643247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 41.

The spelling of 42810643247 in words is "forty-two billion, eight hundred ten million, six hundred forty-three thousand, two hundred forty-seven".