620553220000 has 240 divisors, whose sum is σ = 1781888613120. Its totient is φ = 208232064000.

The previous prime is 620553219989. The next prime is 620553220037. The reversal of 620553220000 is 22355026.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6532846 + ... + 6627154.

It is an arithmetic number, because the mean of its divisors is an integer number (7424535888).

Almost surely, 2^620553220000 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 620553220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (890944306560).

620553220000 is an abundant number, since it is smaller than the sum of its proper divisors (1161335393120).

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

620553220000 is an equidigital number, since it uses as much as digits as its factorization.

620553220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94393 (or 94370 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 620553220000 its reverse (22355026), we get a palindrome (620575575026).

The spelling of 620553220000 in words is "six hundred twenty billion, five hundred fifty-three million, two hundred twenty thousand".