655871558812 has 12 divisors (see below), whose sum is σ = 1151692551576. Its totient is φ = 326816544080.

The previous prime is 655871558809. The next prime is 655871558857. The reversal of 655871558812 is 218855178556.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279807514 + ... + 279809857.

It is an arithmetic number, because the mean of its divisors is an integer number (95974379298).

Almost surely, 2^655871558812 is an apocalyptic number.

It is an amenable number.

655871558812 is a deficient number, since it is larger than the sum of its proper divisors (495820992764).

655871558812 is a wasteful number, since it uses less digits than its factorization.

655871558812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559617668 (or 559617666 counting only the distinct ones).

The product of its digits is 26880000, while the sum is 61.

The spelling of 655871558812 in words is "six hundred fifty-five billion, eight hundred seventy-one million, five hundred fifty-eight thousand, eight hundred twelve".