51047011200 has 192 divisors, whose sum is σ = 176985993600. Its totient is φ = 12896040960.

The previous prime is 51047011199. The next prime is 51047011247. The reversal of 51047011200 is 211074015.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42469 + ... + 322331.

It is an arithmetic number, because the mean of its divisors is an integer number (921802050).

Almost surely, 2^51047011200 is an apocalyptic number.

51047011200 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 51047011200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88492996800).

51047011200 is an abundant number, since it is smaller than the sum of its proper divisors (125938982400).

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

51047011200 is a wasteful number, since it uses less digits than its factorization.

51047011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279909 (or 279892 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

Adding to 51047011200 its reverse (211074015), we get a palindrome (51258085215).

The spelling of 51047011200 in words is "fifty-one billion, forty-seven million, eleven thousand, two hundred".