56511050000 has 120 divisors (see below), whose sum is σ = 138122800200. Its totient is φ = 22394880000.

The previous prime is 56511049999. The next prime is 56511050009. The reversal of 56511050000 is 5011565.

It can be written as a sum of positive squares in 12 ways, for example, as 55484744704 + 1026305296 = 235552^2 + 32036^2 .

It is not an unprimeable number, because it can be changed into a prime (56511050009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5444816 + ... + 5455184.

It is an arithmetic number, because the mean of its divisors is an integer number (1151023335).

Almost surely, 2^56511050000 is an apocalyptic number.

56511050000 is a gapful number since it is divisible by the number (50) 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 56511050000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69061400100).

56511050000 is an abundant number, since it is smaller than the sum of its proper divisors (81611750200).

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

56511050000 is a wasteful number, since it uses less digits than its factorization.

56511050000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10511 (or 10485 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 56511050000 its reverse (5011565), we get a palindrome (56516061565).

The spelling of 56511050000 in words is "fifty-six billion, five hundred eleven million, fifty thousand".