51003371240 has 256 divisors, whose sum is σ = 132334387200. Its totient is φ = 17586201600.

The previous prime is 51003371239. The next prime is 51003371257. The reversal of 51003371240 is 4217330015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33053909 + ... + 33055451.

It is an arithmetic number, because the mean of its divisors is an integer number (516931200).

Almost surely, 2^51003371240 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 51003371240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66167193600).

51003371240 is an abundant number, since it is smaller than the sum of its proper divisors (81331015960).

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

51003371240 is a wasteful number, since it uses less digits than its factorization.

51003371240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688 (or 1684 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The spelling of 51003371240 in words is "fifty-one billion, three million, three hundred seventy-one thousand, two hundred forty".