51565727625500 has 192 divisors, whose sum is σ = 129361174225920. Its totient is φ = 17759147616000.

The previous prime is 51565727625493. The next prime is 51565727625527. The reversal of 51565727625500 is 552672756515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 371637137 + ... + 371775863.

It is an arithmetic number, because the mean of its divisors is an integer number (673756115760).

Almost surely, 2^{51565727625500} is an apocalyptic number.

51565727625500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51565727625500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64680587112960).

51565727625500 is an abundant number, since it is smaller than the sum of its proper divisors (77795446600420).

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

51565727625500 is a wasteful number, since it uses less digits than its factorization.

51565727625500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142333 (or 142321 counting only the distinct ones).

The product of its (nonzero) digits is 22050000, while the sum is 56.

The spelling of 51565727625500 in words is "fifty-one trillion, five hundred sixty-five billion, seven hundred twenty-seven million, six hundred twenty-five thousand, five hundred".