51750171648 has 880 divisors, whose sum is σ = 192601411200. Its totient is φ = 13785956352.

The previous prime is 51750171593. The next prime is 51750171721. The reversal of 51750171648 is 84617105715.

51750171648 is a `hidden beast` number, since 5 + 17 + 501 + 71 + 64 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 483646411 + ... + 483646517.

It is an arithmetic number, because the mean of its divisors is an integer number (218865240).

Almost surely, 2^51750171648 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 51750171648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96300705600).

51750171648 is an abundant number, since it is smaller than the sum of its proper divisors (140851239552).

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

51750171648 is a wasteful number, since it uses less digits than its factorization.

51750171648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 45.

The spelling of 51750171648 in words is "fifty-one billion, seven hundred fifty million, one hundred seventy-one thousand, six hundred forty-eight".