51113330140 has 24 divisors (see below), whose sum is σ = 107356721472. Its totient is φ = 20441764800.

The previous prime is 51113330129. The next prime is 51113330153. The reversal of 51113330140 is 4103331115.

It is a super-2 number, since 2×51113330140² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103911 + ... + 336190.

It is an arithmetic number, because the mean of its divisors is an integer number (4473196728).

Almost surely, 2^51113330140 is an apocalyptic number.

It is an amenable number.

51113330140 is an abundant number, since it is smaller than the sum of its proper divisors (56243391332).

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

51113330140 is a wasteful number, since it uses less digits than its factorization.

51113330140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445917 (or 445915 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 51113330140 its reverse (4103331115), we get a palindrome (55216661255).

The spelling of 51113330140 in words is "fifty-one billion, one hundred thirteen million, three hundred thirty thousand, one hundred forty".