618386683816 has 16 divisors (see below), whose sum is σ = 1264881853440. Its totient is φ = 281084856240.

The previous prime is 618386683807. The next prime is 618386683823.

618386683816 is nontrivially palindromic in base 10.

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, 3513560616 + ... + 3513560791.

It is an arithmetic number, because the mean of its divisors is an integer number (79055115840).

Almost surely, 2^618386683816 is an apocalyptic number.

It is an amenable number.

618386683816 is an abundant number, since it is smaller than the sum of its proper divisors (646495169624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618386683816 is a wasteful number, since it uses less digits than its factorization.

618386683816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7027121424 (or 7027121420 counting only the distinct ones).

The product of its digits is 47775744, while the sum is 64.

The spelling of 618386683816 in words is "six hundred eighteen billion, three hundred eighty-six million, six hundred eighty-three thousand, eight hundred sixteen".