166288075558 has 32 divisors (see below), whose sum is σ = 273067835040. Its totient is φ = 75319234560.

The previous prime is 166288075549. The next prime is 166288075573. The reversal of 166288075558 is 855570882661.

It is a super-3 number, since 3×166288075558³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 166288075496 and 166288075505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8153598 + ... + 8173966.

It is an arithmetic number, because the mean of its divisors is an integer number (8533369845).

Almost surely, 2^166288075558 is an apocalyptic number.

166288075558 is a deficient number, since it is larger than the sum of its proper divisors (106779759482).

166288075558 is a wasteful number, since it uses less digits than its factorization.

166288075558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21672.

The product of its (nonzero) digits is 32256000, while the sum is 61.

The spelling of 166288075558 in words is "one hundred sixty-six billion, two hundred eighty-eight million, seventy-five thousand, five hundred fifty-eight".