42706759657 has 2 divisors, whose sum is σ = 42706759658. Its totient is φ = 42706759656.

The previous prime is 42706759637. The next prime is 42706759721. The reversal of 42706759657 is 75695760724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41908640656 + 798119001 = 204716^2 + 28251^2 .

It is a cyclic number.

It is not a de Polignac number, because 42706759657 - 2¹¹ = 42706757609 is a prime.

It is not a weakly prime, because it can be changed into another prime (42706759637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21353379828 + 21353379829.

It is an arithmetic number, because the mean of its divisors is an integer number (21353379829).

Almost surely, 2^42706759657 is an apocalyptic number.

It is an amenable number.

42706759657 is a deficient number, since it is larger than the sum of its proper divisors (1).

42706759657 is an equidigital number, since it uses as much as digits as its factorization.

42706759657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22226400, while the sum is 58.

The spelling of 42706759657 in words is "forty-two billion, seven hundred six million, seven hundred fifty-nine thousand, six hundred fifty-seven".