42589378658 has 18 divisors (see below), whose sum is σ = 64803598209. Its totient is φ = 20992474512.

The previous prime is 42589378631. The next prime is 42589378669. The reversal of 42589378658 is 85687398524.

It can be written as a sum of positive squares in 2 ways, for example, as 42393574609 + 195804049 = 205897^2 + 13993^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=145927.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42589378594 and 42589378603.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21304343 + ... + 21306341.

Almost surely, 2^42589378658 is an apocalyptic number.

42589378658 is a deficient number, since it is larger than the sum of its proper divisors (22214219551).

42589378658 is an frugal number, since it uses more digits than its factorization.

42589378658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4146 (or 2074 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 65.

The spelling of 42589378658 in words is "forty-two billion, five hundred eighty-nine million, three hundred seventy-eight thousand, six hundred fifty-eight".