51003331040000 has 180 divisors, whose sum is σ = 127573077859920. Its totient is φ = 20344481280000.

The previous prime is 51003331039967. The next prime is 51003331040017. The reversal of 51003331040000 is 4013330015.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 56996030 + ... + 57883970.

It is an arithmetic number, because the mean of its divisors is an integer number (708739321444).

Almost surely, 2^{51003331040000} is an apocalyptic number.

51003331040000 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 51003331040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63786538929960).

51003331040000 is an abundant number, since it is smaller than the sum of its proper divisors (76569746819920).

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

51003331040000 is an frugal number, since it uses more digits than its factorization.

51003331040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888336 (or 888307 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

Adding to 51003331040000 its reverse (4013330015), we get a palindrome (51007344370015).

The spelling of 51003331040000 in words is "fifty-one trillion, three billion, three hundred thirty-one million, forty thousand".