6520061256100 has 144 divisors (see below), whose sum is σ = 16744926756096. Its totient is φ = 2157315264000.

The previous prime is 6520061256089. The next prime is 6520061256113. The reversal of 6520061256100 is 16521600256.

It is a super-2 number, since 2×6520061256100² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 822585 + ... + 3703615.

It is an arithmetic number, because the mean of its divisors is an integer number (116284213584).

Almost surely, 2^{6520061256100} 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 6520061256100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8372463378048).

6520061256100 is an abundant number, since it is smaller than the sum of its proper divisors (10224865499996).

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

6520061256100 is a wasteful number, since it uses less digits than its factorization.

6520061256100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881166 (or 2881159 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 6520061256100 its reverse (16521600256), we get a palindrome (6536582856356).

The spelling of 6520061256100 in words is "six trillion, five hundred twenty billion, sixty-one million, two hundred fifty-six thousand, one hundred".