12662706564612 has 144 divisors (see below), whose sum is σ = 36531090518832. Its totient is φ = 3663742648320.

The previous prime is 12662706564523. The next prime is 12662706564643. The reversal of 12662706564612 is 21646560726621.

12662706564612 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 2 + 70 + 6 + 564 + 6 + 1 + 2 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 951475716 + 12661755088896 = 30846^2 + 3558336^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8174412 + ... + 9599292.

It is an arithmetic number, because the mean of its divisors is an integer number (253688128603).

Almost surely, 2^{12662706564612} is an apocalyptic number.

12662706564612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12662706564612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18265545259416).

12662706564612 is an abundant number, since it is smaller than the sum of its proper divisors (23868383954220).

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

12662706564612 is a wasteful number, since it uses less digits than its factorization.

12662706564612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426038 (or 1426033 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 12662706564612 in words is "twelve trillion, six hundred sixty-two billion, seven hundred six million, five hundred sixty-four thousand, six hundred twelve".