51433445312 has 56 divisors (see below), whose sum is σ = 104708681616. Its totient is φ = 25058654208.

The previous prime is 51433445279. The next prime is 51433445347. The reversal of 51433445312 is 21354433415.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321458 + ... + 454094.

It is an arithmetic number, because the mean of its divisors is an integer number (1869797886).

Almost surely, 2^51433445312 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 51433445312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52354340808).

51433445312 is an abundant number, since it is smaller than the sum of its proper divisors (53275236304).

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

51433445312 is a wasteful number, since it uses less digits than its factorization.

51433445312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132805 (or 132795 counting only the distinct ones).

The product of its digits is 86400, while the sum is 35.

Adding to 51433445312 its reverse (21354433415), we get a palindrome (72787878727).

The spelling of 51433445312 in words is "fifty-one billion, four hundred thirty-three million, four hundred forty-five thousand, three hundred twelve".