42500416643 has 2 divisors, whose sum is σ = 42500416644. Its totient is φ = 42500416642.

The previous prime is 42500416561. The next prime is 42500416691. The reversal of 42500416643 is 34661400524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42500416643 - 2¹² = 42500412547 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42500446643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21250208321 + 21250208322.

It is an arithmetic number, because the mean of its divisors is an integer number (21250208322).

Almost surely, 2^42500416643 is an apocalyptic number.

42500416643 is a deficient number, since it is larger than the sum of its proper divisors (1).

42500416643 is an equidigital number, since it uses as much as digits as its factorization.

42500416643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 42500416643 in words is "forty-two billion, five hundred million, four hundred sixteen thousand, six hundred forty-three".