42340555516639 has 2 divisors, whose sum is σ = 42340555516640. Its totient is φ = 42340555516638.

The previous prime is 42340555516603. The next prime is 42340555516673. The reversal of 42340555516639 is 93661555504324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42340555516639 - 2⁴¹ = 40141532261087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42340555516439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21170277758319 + 21170277758320.

It is an arithmetic number, because the mean of its divisors is an integer number (21170277758320).

Almost surely, 2^{42340555516639} is an apocalyptic number.

42340555516639 is a deficient number, since it is larger than the sum of its proper divisors (1).

42340555516639 is an equidigital number, since it uses as much as digits as its factorization.

42340555516639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320000, while the sum is 58.

The spelling of 42340555516639 in words is "forty-two trillion, three hundred forty billion, five hundred fifty-five million, five hundred sixteen thousand, six hundred thirty-nine".