656706280012 has 24 divisors (see below), whose sum is σ = 1159203451392. Its totient is φ = 325514154000.

The previous prime is 656706279997. The next prime is 656706280049. The reversal of 656706280012 is 210082607656.

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, 810628 + ... + 1403755.

It is an arithmetic number, because the mean of its divisors is an integer number (48300143808).

Almost surely, 2^656706280012 is an apocalyptic number.

It is an amenable number.

656706280012 is a deficient number, since it is larger than the sum of its proper divisors (502497171380).

656706280012 is a wasteful number, since it uses less digits than its factorization.

656706280012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215029 (or 2215027 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

Adding to 656706280012 its reverse (210082607656), we get a palindrome (866788887668).

The spelling of 656706280012 in words is "six hundred fifty-six billion, seven hundred six million, two hundred eighty thousand, twelve".