5181222013000 has 128 divisors (see below), whose sum is σ = 13242340650240. Its totient is φ = 1881788160000.

The previous prime is 5181222012991. The next prime is 5181222013001. The reversal of 5181222013000 is 3102221815.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (5181222013001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8766840 + ... + 9339160.

It is an arithmetic number, because the mean of its divisors is an integer number (103455786330).

Almost surely, 2^{5181222013000} is an apocalyptic number.

5181222013000 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 5181222013000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6621170325120).

5181222013000 is an abundant number, since it is smaller than the sum of its proper divisors (8061118637240).

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

5181222013000 is a wasteful number, since it uses less digits than its factorization.

5181222013000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573176 (or 573162 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 5181222013000 its reverse (3102221815), we get a palindrome (5184324234815).

The spelling of 5181222013000 in words is "five trillion, one hundred eighty-one billion, two hundred twenty-two million, thirteen thousand".