618599944656 has 120 divisors (see below), whose sum is σ = 1822625532000. Its totient is φ = 195316482816.

The previous prime is 618599944621. The next prime is 618599944709. The reversal of 618599944656 is 656449995816.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22473430 + ... + 22500938.

It is an arithmetic number, because the mean of its divisors is an integer number (15188546100).

Almost surely, 2^618599944656 is an apocalyptic number.

It is an amenable number.

618599944656 is an abundant number, since it is smaller than the sum of its proper divisors (1204025587344).

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

618599944656 is a wasteful number, since it uses less digits than its factorization.

618599944656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35761 (or 35752 counting only the distinct ones).

The product of its digits is 503884800, while the sum is 72.

The spelling of 618599944656 in words is "six hundred eighteen billion, five hundred ninety-nine million, nine hundred forty-four thousand, six hundred fifty-six".