618666686116 has 24 divisors (see below), whose sum is σ = 1121507593920. Its totient is φ = 298264660512.

The previous prime is 618666686101. The next prime is 618666686117. The reversal of 618666686116 is 611686666816.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (618666686117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3502866 + ... + 3675241.

It is an arithmetic number, because the mean of its divisors is an integer number (46729483080).

Almost surely, 2^618666686116 is an apocalyptic number.

It is an amenable number.

618666686116 is a deficient number, since it is larger than the sum of its proper divisors (502840907804).

618666686116 is a wasteful number, since it uses less digits than its factorization.

618666686116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7178883 (or 7178881 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 61.

The spelling of 618666686116 in words is "six hundred eighteen billion, six hundred sixty-six million, six hundred eighty-six thousand, one hundred sixteen".