12658881081 has 32 divisors (see below), whose sum is σ = 22150886400. Its totient is φ = 6229932480.

The previous prime is 12658881049. The next prime is 12658881121. The reversal of 12658881081 is 18018885621.

12658881081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12658881081 - 2⁵ = 12658881049 is a prime.

It is a super-2 number, since 2×12658881081² (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 12658881081.

It is not an unprimeable number, because it can be changed into a prime (12658881281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1437726 + ... + 1446503.

It is an arithmetic number, because the mean of its divisors is an integer number (692215200).

Almost surely, 2^12658881081 is an apocalyptic number.

12658881081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12658881081 is a deficient number, since it is larger than the sum of its proper divisors (9492005319).

12658881081 is a wasteful number, since it uses less digits than its factorization.

12658881081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2884269.

The product of its (nonzero) digits is 245760, while the sum is 48.

The spelling of 12658881081 in words is "twelve billion, six hundred fifty-eight million, eight hundred eighty-one thousand, eighty-one".