51986880000 has 800 divisors, whose sum is σ = 210159227520. Its totient is φ = 12579840000.

The previous prime is 51986879939. The next prime is 51986880017. The reversal of 51986880000 is 8868915.

It is a tau number, because it is divible by the number of its divisors (800).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 95039727 + ... + 95040273.

Almost surely, 2^51986880000 is an apocalyptic number.

51986880000 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 51986880000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105079613760).

51986880000 is an abundant number, since it is smaller than the sum of its proper divisors (158172347520).

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

51986880000 is an equidigital number, since it uses as much as digits as its factorization.

51986880000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 51986880000 in words is "fifty-one billion, nine hundred eighty-six million, eight hundred eighty thousand".