6520122000 has 640 divisors, whose sum is σ = 27335393280. Its totient is φ = 1454630400.

The previous prime is 6520121987. The next prime is 6520122017. The reversal of 6520122000 is 2210256.

6520122000 is a `hidden beast` number, since 652 + 0 + 12 + 2 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 17765817 + ... + 17766183.

It is an arithmetic number, because the mean of its divisors is an integer number (42711552).

Almost surely, 2^6520122000 is an apocalyptic number.

6520122000 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 6520122000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13667696640).

6520122000 is an abundant number, since it is smaller than the sum of its proper divisors (20815271280).

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

6520122000 is a wasteful number, since it uses less digits than its factorization.

6520122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 6520122000 is about 80747.2723997535. The cubic root of 6520122000 is about 1868.1793789534.

Adding to 6520122000 its reverse (2210256), we get a palindrome (6522332256).

The spelling of 6520122000 in words is "six billion, five hundred twenty million, one hundred twenty-two thousand".