51563226528 has 432 divisors, whose sum is σ = 169403270400. Its totient is φ = 14846515200.

The previous prime is 51563226503. The next prime is 51563226557. The reversal of 51563226528 is 82562236515.

51563226528 is a `hidden beast` number, since 5 + 1 + 5 + 632 + 2 + 6 + 5 + 2 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 63736588 + ... + 63737396.

It is an arithmetic number, because the mean of its divisors is an integer number (392137200).

Almost surely, 2^51563226528 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 51563226528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84701635200).

51563226528 is an abundant number, since it is smaller than the sum of its proper divisors (117840043872).

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

51563226528 is a wasteful number, since it uses less digits than its factorization.

51563226528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937 (or 915 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The spelling of 51563226528 in words is "fifty-one billion, five hundred sixty-three million, two hundred twenty-six thousand, five hundred twenty-eight".