51433115064 has 128 divisors (see below), whose sum is σ = 139966617600. Its totient is φ = 15689963520.

The previous prime is 51433115053. The next prime is 51433115077. The reversal of 51433115064 is 46051133415.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8718964 + ... + 8724860.

It is an arithmetic number, because the mean of its divisors is an integer number (1093489200).

Almost surely, 2^51433115064 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 51433115064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69983308800).

51433115064 is an abundant number, since it is smaller than the sum of its proper divisors (88533502536).

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

51433115064 is a wasteful number, since it uses less digits than its factorization.

51433115064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6573 (or 6569 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 51433115064 its reverse (46051133415), we get a palindrome (97484248479).

The spelling of 51433115064 in words is "fifty-one billion, four hundred thirty-three million, one hundred fifteen thousand, sixty-four".