620543553600 has 168 divisors, whose sum is σ = 2036346415488. Its totient is φ = 165441996800.

The previous prime is 620543553587. The next prime is 620543553611. The reversal of 620543553600 is 6355345026.

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, 27401482 + ... + 27424118.

It is an arithmetic number, because the mean of its divisors is an integer number (12121109616).

Almost surely, 2^620543553600 is an apocalyptic number.

620543553600 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 620543553600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1018173207744).

620543553600 is an abundant number, since it is smaller than the sum of its proper divisors (1415802861888).

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

620543553600 is a wasteful number, since it uses less digits than its factorization.

620543553600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28373 (or 28358 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 39.

Adding to 620543553600 its reverse (6355345026), we get a palindrome (626898898626).

The spelling of 620543553600 in words is "six hundred twenty billion, five hundred forty-three million, five hundred fifty-three thousand, six hundred".