218616080612 has 6 divisors (see below), whose sum is σ = 382578141078. Its totient is φ = 109308040304.

The previous prime is 218616080593. The next prime is 218616080621. The reversal of 218616080612 is 216080616812.

It can be written as a sum of positive squares in only one way, i.e., 188819797156 + 29796283456 = 434534^2 + 172616^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 218616080612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27327010073 + ... + 27327010080.

It is an arithmetic number, because the mean of its divisors is an integer number (63763023513).

Almost surely, 2^218616080612 is an apocalyptic number.

It is an amenable number.

218616080612 is a deficient number, since it is larger than the sum of its proper divisors (163962060466).

218616080612 is a wasteful number, since it uses less digits than its factorization.

218616080612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54654020157 (or 54654020155 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The spelling of 218616080612 in words is "two hundred eighteen billion, six hundred sixteen million, eighty thousand, six hundred twelve".