667252065558 has 32 divisors (see below), whose sum is σ = 1448128991232. Its totient is φ = 203741085600.

The previous prime is 667252065499. The next prime is 667252065563. The reversal of 667252065558 is 855560252766.

It is a happy number.

It is a super-5 number, since 5×667252065558⁵ (a number of 60 digits) contains 55555 as substring. Note that it is a super-d number also for d = 3.

It is a junction number, because it is equal to n+sod(n) for n = 667252065498 and 667252065507.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 32640598 + ... + 32661033.

It is an arithmetic number, because the mean of its divisors is an integer number (45254030976).

Almost surely, 2^667252065558 is an apocalyptic number.

667252065558 is an abundant number, since it is smaller than the sum of its proper divisors (780876925674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667252065558 is a wasteful number, since it uses less digits than its factorization.

667252065558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65301780.

The product of its (nonzero) digits is 30240000, while the sum is 57.

The spelling of 667252065558 in words is "six hundred sixty-seven billion, two hundred fifty-two million, sixty-five thousand, five hundred fifty-eight".