51899356800000 has 1584 divisors, whose sum is σ = 200607489298944. Its totient is φ = 13387161600000.

The previous prime is 51899356799963. The next prime is 51899356800001. The reversal of 51899356800000 is 865399815.

It is a happy number.

51899356800000 is a `hidden beast` number, since 518 + 99 + 35 + 6 + 8 + 0 + 0 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 51899356800000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51899356800001) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 24105598924 + ... + 24105601076.

Almost surely, 2^{51899356800000} is an apocalyptic number.

51899356800000 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 51899356800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100303744649472).

51899356800000 is an abundant number, since it is smaller than the sum of its proper divisors (148708132498944).

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

51899356800000 is an frugal number, since it uses more digits than its factorization.

51899356800000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244 (or 2194 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 54.

The spelling of 51899356800000 in words is "fifty-one trillion, eight hundred ninety-nine billion, three hundred fifty-six million, eight hundred thousand".