51480499968 has 360 divisors, whose sum is σ = 166970410992. Its totient is φ = 15710257152.

The previous prime is 51480499933. The next prime is 51480499969. The reversal of 51480499968 is 86999408415.

51480499968 is a `hidden beast` number, since 5 + 1 + 4 + 80 + 499 + 9 + 68 = 666.

51480499968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51480499969) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13040971 + ... + 13044917.

Almost surely, 2^51480499968 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 51480499968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83485205496).

51480499968 is an abundant number, since it is smaller than the sum of its proper divisors (115489911024).

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

51480499968 is a wasteful number, since it uses less digits than its factorization.

51480499968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029 (or 4006 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 63.

The spelling of 51480499968 in words is "fifty-one billion, four hundred eighty million, four hundred ninety-nine thousand, nine hundred sixty-eight".