42578326658 has 12 divisors (see below), whose sum is σ = 74294835462. Its totient is φ = 18247854240.

The previous prime is 42578326643. The next prime is 42578326801. The reversal of 42578326658 is 85662387524.

It can be written as a sum of positive squares in only one way, i.e., 35091404929 + 7486921729 = 187327^2 + 86527^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 217236263 + ... + 217236458.

Almost surely, 2^42578326658 is an apocalyptic number.

42578326658 is a deficient number, since it is larger than the sum of its proper divisors (31716508804).

42578326658 is a wasteful number, since it uses less digits than its factorization.

42578326658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434472737 (or 434472730 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 56.

The spelling of 42578326658 in words is "forty-two billion, five hundred seventy-eight million, three hundred twenty-six thousand, six hundred fifty-eight".