51000244704 has 384 divisors, whose sum is σ = 160840028160. Its totient is φ = 15688857600.

The previous prime is 51000244663. The next prime is 51000244709. The reversal of 51000244704 is 40744200015.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51000244709) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52522939 + ... + 52523909.

It is an arithmetic number, because the mean of its divisors is an integer number (418854240).

Almost surely, 2^51000244704 is an apocalyptic number.

51000244704 is a gapful number since it is divisible by the number (54) 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 51000244704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80420014080).

51000244704 is an abundant number, since it is smaller than the sum of its proper divisors (109839783456).

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

51000244704 is a wasteful number, since it uses less digits than its factorization.

51000244704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111 (or 1097 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

Adding to 51000244704 its reverse (40744200015), we get a palindrome (91744444719).

The spelling of 51000244704 in words is "fifty-one billion, two hundred forty-four thousand, seven hundred four".