6420000648552 has 256 divisors, whose sum is σ = 17090819665920. Its totient is φ = 2007132825600.

The previous prime is 6420000648539. The next prime is 6420000648599. The reversal of 6420000648552 is 2558460000246.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 727804302 + ... + 727813122.

It is an arithmetic number, because the mean of its divisors is an integer number (66761014320).

Almost surely, 2^{6420000648552} 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 6420000648552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8545409832960).

6420000648552 is an abundant number, since it is smaller than the sum of its proper divisors (10670819017368).

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

6420000648552 is a wasteful number, since it uses less digits than its factorization.

6420000648552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9184 (or 9180 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 42.

Adding to 6420000648552 its reverse (2558460000246), we get a palindrome (8978460648798).

The spelling of 6420000648552 in words is "six trillion, four hundred twenty billion, six hundred forty-eight thousand, five hundred fifty-two".