12606005881 has 16 divisors (see below), whose sum is σ = 14930915328. Its totient is φ = 10414890000.

The previous prime is 12606005779. The next prime is 12606005939. The reversal of 12606005881 is 18850060621.

It is a cyclic number.

It is not a de Polignac number, because 12606005881 - 2¹¹ = 12606003833 is a prime.

It is a super-2 number, since 2×12606005881² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12606005881.

It is not an unprimeable number, because it can be changed into a prime (12606005281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61255 + ... + 170188.

It is an arithmetic number, because the mean of its divisors is an integer number (933182208).

Almost surely, 2^12606005881 is an apocalyptic number.

It is an amenable number.

12606005881 is a deficient number, since it is larger than the sum of its proper divisors (2324909447).

12606005881 is a wasteful number, since it uses less digits than its factorization.

12606005881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231732.

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 12606005881 in words is "twelve billion, six hundred six million, five thousand, eight hundred eighty-one".