51244433504 has 96 divisors (see below), whose sum is σ = 114943401216. Its totient is φ = 22260958720.

The previous prime is 51244433491. The next prime is 51244433519. The reversal of 51244433504 is 40533444215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13494134 + ... + 13497930.

It is an arithmetic number, because the mean of its divisors is an integer number (1197327096).

Almost surely, 2^51244433504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51244433504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57471700608).

51244433504 is an abundant number, since it is smaller than the sum of its proper divisors (63698967712).

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

51244433504 is a wasteful number, since it uses less digits than its factorization.

51244433504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5508 (or 5500 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 51244433504 its reverse (40533444215), we get a palindrome (91777877719).

The spelling of 51244433504 in words is "fifty-one billion, two hundred forty-four million, four hundred thirty-three thousand, five hundred four".