51327291600 has 960 divisors, whose sum is σ = 210786508800. Its totient is φ = 11757312000.

The previous prime is 51327291577. The next prime is 51327291641. The reversal of 51327291600 is 619272315.

51327291600 is a `hidden beast` number, since 5 + 1 + 3 + 27 + 29 + 1 + 600 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 189399465 + ... + 189399735.

It is an arithmetic number, because the mean of its divisors is an integer number (219569280).

Almost surely, 2^51327291600 is an apocalyptic number.

51327291600 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 51327291600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105393254400).

51327291600 is an abundant number, since it is smaller than the sum of its proper divisors (159459217200).

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

51327291600 is a wasteful number, since it uses less digits than its factorization.

51327291600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The spelling of 51327291600 in words is "fifty-one billion, three hundred twenty-seven million, two hundred ninety-one thousand, six hundred".