51444100000 has 144 divisors (see below), whose sum is σ = 132102544896. Its totient is φ = 19682080000.

The previous prime is 51444099991. The next prime is 51444100031. The reversal of 51444100000 is 144415.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2288817 + ... + 2311183.

It is an arithmetic number, because the mean of its divisors is an integer number (917378784).

Almost surely, 2^51444100000 is an apocalyptic number.

51444100000 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 51444100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66051272448).

51444100000 is an abundant number, since it is smaller than the sum of its proper divisors (80658444896).

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

51444100000 is an equidigital number, since it uses as much as digits as its factorization.

51444100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22425 (or 22397 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 51444100000 its reverse (144415), we get a palindrome (51444244415).

The spelling of 51444100000 in words is "fifty-one billion, four hundred forty-four million, one hundred thousand".