12147741566 has 16 divisors (see below), whose sum is σ = 18266497920. Its totient is φ = 6058926720.

The previous prime is 12147741559. The next prime is 12147741581. The reversal of 12147741566 is 66514774121.

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, 1772306 + ... + 1779146.

It is an arithmetic number, because the mean of its divisors is an integer number (1141656120).

Almost surely, 2^12147741566 is an apocalyptic number.

12147741566 is a deficient number, since it is larger than the sum of its proper divisors (6118756354).

12147741566 is a wasteful number, since it uses less digits than its factorization.

12147741566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8899.

The product of its digits is 282240, while the sum is 44.

The spelling of 12147741566 in words is "twelve billion, one hundred forty-seven million, seven hundred forty-one thousand, five hundred sixty-six".