51530326848 has 896 divisors, whose sum is σ = 210178375680. Its totient is φ = 11956377600.

The previous prime is 51530326847. The next prime is 51530326871. The reversal of 51530326848 is 84862303515.

51530326848 is a `hidden beast` number, since 5 + 1 + 530 + 32 + 6 + 84 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51530326847) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1662268593 + ... + 1662268623.

It is an arithmetic number, because the mean of its divisors is an integer number (234574080).

Almost surely, 2^51530326848 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 51530326848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105089187840).

51530326848 is an abundant number, since it is smaller than the sum of its proper divisors (158648048832).

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

51530326848 is a wasteful number, since it uses less digits than its factorization.

51530326848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 51530326848 in words is "fifty-one billion, five hundred thirty million, three hundred twenty-six thousand, eight hundred forty-eight".