6556251330 has 96 divisors (see below), whose sum is σ = 17431884288. Its totient is φ = 1709136000.

The previous prime is 6556251307. The next prime is 6556251337. The reversal of 6556251330 is 331526556.

6556251330 is a `hidden beast` number, since 6 + 55 + 62 + 513 + 30 = 666.

It is not an unprimeable number, because it can be changed into a prime (6556251337) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 913255 + ... + 920405.

It is an arithmetic number, because the mean of its divisors is an integer number (181582128).

Almost surely, 2^6556251330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6556251330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8715942144).

6556251330 is an abundant number, since it is smaller than the sum of its proper divisors (10875632958).

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

6556251330 is a wasteful number, since it uses less digits than its factorization.

6556251330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7392 (or 7389 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The square root of 6556251330 is about 80970.6819163578. The cubic root of 6556251330 is about 1871.6236796283.

Adding to 6556251330 its reverse (331526556), we get a palindrome (6887777886).

The spelling of 6556251330 in words is "six billion, five hundred fifty-six million, two hundred fifty-one thousand, three hundred thirty".