51044033520 has 320 divisors, whose sum is σ = 185630976000. Its totient is φ = 12856402944.

The previous prime is 51044033497. The next prime is 51044033567. The reversal of 51044033520 is 2533044015.

51044033520 is a `hidden beast` number, since 5 + 104 + 4 + 0 + 33 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 15059986 + ... + 15063374.

It is an arithmetic number, because the mean of its divisors is an integer number (580096800).

Almost surely, 2^51044033520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51044033520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92815488000).

51044033520 is an abundant number, since it is smaller than the sum of its proper divisors (134586942480).

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

51044033520 is a wasteful number, since it uses less digits than its factorization.

51044033520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3797 (or 3785 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 51044033520 its reverse (2533044015), we get a palindrome (53577077535).

The spelling of 51044033520 in words is "fifty-one billion, forty-four million, thirty-three thousand, five hundred twenty".