618856873365280 has 192 divisors, whose sum is σ = 1636725994839936. Its totient is φ = 219165594624000.

The previous prime is 618856873365251. The next prime is 618856873365371. The reversal of 618856873365280 is 82563378658816.

It is a super-2 number, since 2×618856873365280² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 618856873365197 and 618856873365206.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33693574 + ... + 48713146.

It is an arithmetic number, because the mean of its divisors is an integer number (8524614556458).

Almost surely, 2^{618856873365280} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618856873365280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (818362997419968).

618856873365280 is an abundant number, since it is smaller than the sum of its proper divisors (1017869121474656).

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

618856873365280 is a wasteful number, since it uses less digits than its factorization.

618856873365280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15020211 (or 15020203 counting only the distinct ones).

The product of its (nonzero) digits is 2786918400, while the sum is 76.

The spelling of 618856873365280 in words is "six hundred eighteen trillion, eight hundred fifty-six billion, eight hundred seventy-three million, three hundred sixty-five thousand, two hundred eighty".