12612165558 has 16 divisors (see below), whose sum is σ = 25225806576. Its totient is φ = 4203809280.

The previous prime is 12612165541. The next prime is 12612165571. The reversal of 12612165558 is 85556121621.

It is a super-3 number, since 3×12612165558³ (a number of 31 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71910 + ... + 174342.

It is an arithmetic number, because the mean of its divisors is an integer number (1576612911).

Almost surely, 2^12612165558 is an apocalyptic number.

12612165558 is an abundant number, since it is smaller than the sum of its proper divisors (12613641018).

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

12612165558 is a wasteful number, since it uses less digits than its factorization.

12612165558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122959.

The product of its digits is 144000, while the sum is 42.

The spelling of 12612165558 in words is "twelve billion, six hundred twelve million, one hundred sixty-five thousand, five hundred fifty-eight".