618555425080320 has 4224 divisors, whose sum is σ = 2841235737984000. Its totient is φ = 126807908548608.

The previous prime is 618555425080277. The next prime is 618555425080363. The reversal of 618555425080320 is 23080524555816.

618555425080320 is a `hidden beast` number, since 6 + 1 + 8 + 5 + 554 + 2 + 5 + 0 + 80 + 3 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (618555425080277) and next prime (618555425080363).

It is a super-2 number, since 2×618555425080320² (a number of 30 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 843868246674 + ... + 843868247406.

Almost surely, 2^{618555425080320} is an apocalyptic number.

618555425080320 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 618555425080320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1420617868992000).

618555425080320 is an abundant number, since it is smaller than the sum of its proper divisors (2222680312903680).

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

618555425080320 is a wasteful number, since it uses less digits than its factorization.

618555425080320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 11520000, while the sum is 54.

The spelling of 618555425080320 in words is "six hundred eighteen trillion, five hundred fifty-five billion, four hundred twenty-five million, eighty thousand, three hundred twenty".