618580385280 has 1600 divisors, whose sum is σ = 2719058969088. Its totient is φ = 132259184640.

The previous prime is 618580385273. The next prime is 618580385281. The reversal of 618580385280 is 82583085816.

It is a happy number.

618580385280 is a `hidden beast` number, since 6 + 1 + 8 + 5 + 80 + 38 + 528 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618580385281) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 682006587 + ... + 682007493.

Almost surely, 2^618580385280 is an apocalyptic number.

618580385280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618580385280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359529484544).

618580385280 is an abundant number, since it is smaller than the sum of its proper divisors (2100478583808).

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

618580385280 is a wasteful number, since it uses less digits than its factorization.

618580385280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989 (or 964 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 54.

The spelling of 618580385280 in words is "six hundred eighteen billion, five hundred eighty million, three hundred eighty-five thousand, two hundred eighty".