42686006509 has 8 divisors (see below), whose sum is σ = 42753304440. Its totient is φ = 42618740736.

The previous prime is 42686006501. The next prime is 42686006527. The reversal of 42686006509 is 90560068624.

It can be written as a sum of positive squares in 4 ways, for example, as 28602250884 + 14083755625 = 169122^2 + 118675^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42686006509 - 2³ = 42686006501 is a prime.

It is a super-3 number, since 3×42686006509³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42686006501) 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 in 7 ways as a sum of consecutive naturals, for example, 4530087 + ... + 4539499.

It is an arithmetic number, because the mean of its divisors is an integer number (5344163055).

Almost surely, 2^42686006509 is an apocalyptic number.

It is an amenable number.

42686006509 is a deficient number, since it is larger than the sum of its proper divisors (67297931).

42686006509 is an equidigital number, since it uses as much as digits as its factorization.

42686006509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16079.

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 42686006509 in words is "forty-two billion, six hundred eighty-six million, six thousand, five hundred nine".