12811061686 has 16 divisors (see below), whose sum is σ = 20079730944. Its totient is φ = 6118585704.

The previous prime is 12811061639. The next prime is 12811061693. The reversal of 12811061686 is 68616011821.

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, 158100 + ... + 224983.

It is an arithmetic number, because the mean of its divisors is an integer number (1254983184).

Almost surely, 2^12811061686 is an apocalyptic number.

12811061686 is a deficient number, since it is larger than the sum of its proper divisors (7268669258).

12811061686 is a wasteful number, since it uses less digits than its factorization.

12811061686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383835.

The product of its (nonzero) digits is 27648, while the sum is 40.

The spelling of 12811061686 in words is "twelve billion, eight hundred eleven million, sixty-one thousand, six hundred eighty-six".