42643415207 has 2 divisors, whose sum is σ = 42643415208. Its totient is φ = 42643415206.

The previous prime is 42643415203. The next prime is 42643415239. The reversal of 42643415207 is 70251434624.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42643415207 - 2² = 42643415203 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42643415203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21321707603 + 21321707604.

It is an arithmetic number, because the mean of its divisors is an integer number (21321707604).

Almost surely, 2^42643415207 is an apocalyptic number.

42643415207 is a deficient number, since it is larger than the sum of its proper divisors (1).

42643415207 is an equidigital number, since it uses as much as digits as its factorization.

42643415207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 42643415207 in words is "forty-two billion, six hundred forty-three million, four hundred fifteen thousand, two hundred seven".