51295686848 has 336 divisors, whose sum is σ = 133689852000. Its totient is φ = 19347406848.

The previous prime is 51295686847. The next prime is 51295686851. The reversal of 51295686848 is 84868659215.

Its product of digits (33177600) is a multiple of the sum of its prime factors (720).

It is not an unprimeable number, because it can be changed into a prime (51295686847) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 90150308 + ... + 90150876.

Almost surely, 2^51295686848 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 51295686848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66844926000).

51295686848 is an abundant number, since it is smaller than the sum of its proper divisors (82394165152).

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

51295686848 is a wasteful number, since it uses less digits than its factorization.

51295686848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720 (or 703 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 62.

The spelling of 51295686848 in words is "fifty-one billion, two hundred ninety-five million, six hundred eighty-six thousand, eight hundred forty-eight".