51060572440 has 128 divisors (see below), whose sum is σ = 120766464000. Its totient is φ = 19405900800.

The previous prime is 51060572419. The next prime is 51060572467. The reversal of 51060572440 is 4427506015.

It is a junction number, because it is equal to n+sod(n) for n = 51060572396 and 51060572405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18708996 + ... + 18711724.

It is an arithmetic number, because the mean of its divisors is an integer number (943488000).

Almost surely, 2^51060572440 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 51060572440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60383232000).

51060572440 is an abundant number, since it is smaller than the sum of its proper divisors (69705891560).

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

51060572440 is a wasteful number, since it uses less digits than its factorization.

51060572440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3041 (or 3037 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 51060572440 in words is "fifty-one billion, sixty million, five hundred seventy-two thousand, four hundred forty".