51331534848 has 312 divisors, whose sum is σ = 163455664320. Its totient is φ = 15391457280.

The previous prime is 51331534847. The next prime is 51331534873. The reversal of 51331534848 is 84843513315.

It is a happy number.

51331534848 is a `hidden beast` number, since 5 + 1 + 3 + 31 + 534 + 84 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (51331534847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41766298 + ... + 41767526.

It is an arithmetic number, because the mean of its divisors is an integer number (523896360).

Almost surely, 2^51331534848 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 51331534848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81727832160).

51331534848 is an abundant number, since it is smaller than the sum of its proper divisors (112124129472).

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

51331534848 is a wasteful number, since it uses less digits than its factorization.

51331534848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373 (or 1348 counting only the distinct ones).

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

The spelling of 51331534848 in words is "fifty-one billion, three hundred thirty-one million, five hundred thirty-four thousand, eight hundred forty-eight".