618516213666 has 16 divisors (see below), whose sum is σ = 1332188768064. Its totient is φ = 190312681104.

The previous prime is 618516213641. The next prime is 618516213683. The reversal of 618516213666 is 666312615816.

618516213666 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3964847446 + ... + 3964847601.

It is an arithmetic number, because the mean of its divisors is an integer number (83261798004).

Almost surely, 2^618516213666 is an apocalyptic number.

618516213666 is an abundant number, since it is smaller than the sum of its proper divisors (713672554398).

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

618516213666 is a wasteful number, since it uses less digits than its factorization.

618516213666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7929695065.

The product of its digits is 1866240, while the sum is 51.

The spelling of 618516213666 in words is "six hundred eighteen billion, five hundred sixteen million, two hundred thirteen thousand, six hundred sixty-six".