42685365601 has 2 divisors, whose sum is σ = 42685365602. Its totient is φ = 42685365600.

The previous prime is 42685365599. The next prime is 42685365641. The reversal of 42685365601 is 10656358624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42683973201 + 1392400 = 206601^2 + 1180^2 .

It is a cyclic number.

It is not a de Polignac number, because 42685365601 - 2¹ = 42685365599 is a prime.

It is a super-3 number, since 3×42685365601³ (a number of 33 digits) contains 333 as substring.

Together with 42685365599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42685365641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21342682800 + 21342682801.

It is an arithmetic number, because the mean of its divisors is an integer number (21342682801).

Almost surely, 2^42685365601 is an apocalyptic number.

It is an amenable number.

42685365601 is a deficient number, since it is larger than the sum of its proper divisors (1).

42685365601 is an equidigital number, since it uses as much as digits as its factorization.

42685365601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 42685365601 in words is "forty-two billion, six hundred eighty-five million, three hundred sixty-five thousand, six hundred one".