51881610752 has 160 divisors (see below), whose sum is σ = 114364198080. Its totient is φ = 23410114560.

The previous prime is 51881610751. The next prime is 51881610763. The reversal of 51881610752 is 25701618815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51881610751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22864274 + ... + 22866542.

It is an arithmetic number, because the mean of its divisors is an integer number (714776238).

Almost surely, 2^51881610752 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 51881610752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57182099040).

51881610752 is an abundant number, since it is smaller than the sum of its proper divisors (62482587328).

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

51881610752 is a wasteful number, since it uses less digits than its factorization.

51881610752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2412 (or 2396 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 44.

The spelling of 51881610752 in words is "fifty-one billion, eight hundred eighty-one million, six hundred ten thousand, seven hundred fifty-two".