51444425020 has 24 divisors (see below), whose sum is σ = 108453666384. Its totient is φ = 20497698816.

The previous prime is 51444424973. The next prime is 51444425027. The reversal of 51444425020 is 2052444415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51444425027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4999182 + ... + 5009461.

It is an arithmetic number, because the mean of its divisors is an integer number (4518902766).

Almost surely, 2^51444425020 is an apocalyptic number.

It is an amenable number.

51444425020 is an abundant number, since it is smaller than the sum of its proper divisors (57009241364).

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

51444425020 is a wasteful number, since it uses less digits than its factorization.

51444425020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10008909 (or 10008907 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 51444425020 its reverse (2052444415), we get a palindrome (53496869435).

The spelling of 51444425020 in words is "fifty-one billion, four hundred forty-four million, four hundred twenty-five thousand, twenty".