51326468208 has 80 divisors (see below), whose sum is σ = 147518509600. Its totient is φ = 17086464000.

The previous prime is 51326468203. The next prime is 51326468227. The reversal of 51326468208 is 80286462315.

51326468208 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 (51326468203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254958 + ... + 409458.

It is an arithmetic number, because the mean of its divisors is an integer number (1843981370).

Almost surely, 2^51326468208 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 51326468208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73759254800).

51326468208 is an abundant number, since it is smaller than the sum of its proper divisors (96192041392).

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

51326468208 is a wasteful number, since it uses less digits than its factorization.

51326468208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155287 (or 155275 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 51326468208 in words is "fifty-one billion, three hundred twenty-six million, four hundred sixty-eight thousand, two hundred eight".