556645563210 has 128 divisors (see below), whose sum is σ = 1474120581120. Its totient is φ = 133400288000.

The previous prime is 556645563209. The next prime is 556645563211. The reversal of 556645563210 is 12365546655.

It is an interprime number because it is at equal distance from previous prime (556645563209) and next prime (556645563211).

It is a self number, because there is not a number n which added to its sum of digits gives 556645563210.

It is not an unprimeable number, because it can be changed into a prime (556645563211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21951799 + ... + 21977141.

It is an arithmetic number, because the mean of its divisors is an integer number (11516567040).

Almost surely, 2^556645563210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556645563210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737060290560).

556645563210 is an abundant number, since it is smaller than the sum of its proper divisors (917475017910).

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

556645563210 is a wasteful number, since it uses less digits than its factorization.

556645563210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26124.

The product of its (nonzero) digits is 3240000, while the sum is 48.

The spelling of 556645563210 in words is "five hundred fifty-six billion, six hundred forty-five million, five hundred sixty-three thousand, two hundred ten".