218568471445652 has 12 divisors (see below), whose sum is σ = 382600867424160. Its totient is φ = 109253937895896.

The previous prime is 218568471445631. The next prime is 218568471445711. The reversal of 218568471445652 is 256544174865812.

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, 7574440502 + ... + 7574469357.

It is an arithmetic number, because the mean of its divisors is an integer number (31883405618680).

Almost surely, 2^{218568471445652} is an apocalyptic number.

It is an amenable number.

218568471445652 is a deficient number, since it is larger than the sum of its proper divisors (164032395978508).

218568471445652 is a wasteful number, since it uses less digits than its factorization.

218568471445652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15148913470 (or 15148913468 counting only the distinct ones).

The product of its digits is 516096000, while the sum is 68.

The spelling of 218568471445652 in words is "two hundred eighteen trillion, five hundred sixty-eight billion, four hundred seventy-one million, four hundred forty-five thousand, six hundred fifty-two".