51544014440 has 32 divisors (see below), whose sum is σ = 116644418280. Its totient is φ = 20498426112.

The previous prime is 51544014409. The next prime is 51544014443. The reversal of 51544014440 is 4441044515.

It can be written as a sum of positive squares in 4 ways, for example, as 48741159076 + 2802855364 = 220774^2 + 52942^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51544014397 and 51544014406.

It is not an unprimeable number, because it can be changed into a prime (51544014443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3717359 + ... + 3731198.

Almost surely, 2^51544014440 is an apocalyptic number.

It is an amenable number.

51544014440 is an abundant number, since it is smaller than the sum of its proper divisors (65100403840).

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

51544014440 is a wasteful number, since it uses less digits than its factorization.

51544014440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7448741 (or 7448737 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 51544014440 its reverse (4441044515), we get a palindrome (55985058955).

The spelling of 51544014440 in words is "fifty-one billion, five hundred forty-four million, fourteen thousand, four hundred forty".