51427934208 has 400 divisors, whose sum is σ = 176613584400. Its totient is φ = 14608760832.

The previous prime is 51427934191. The next prime is 51427934267. The reversal of 51427934208 is 80243972415.

51427934208 is a `hidden beast` number, since 514 + 2 + 7 + 93 + 42 + 0 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 297271210 + ... + 297271382.

It is an arithmetic number, because the mean of its divisors is an integer number (441533961).

Almost surely, 2^51427934208 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 51427934208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88306792200).

51427934208 is an abundant number, since it is smaller than the sum of its proper divisors (125185650192).

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

51427934208 is an frugal number, since it uses more digits than its factorization.

51427934208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 51427934208 in words is "fifty-one billion, four hundred twenty-seven million, nine hundred thirty-four thousand, two hundred eight".