51323594363520 has 256 divisors, whose sum is σ = 173240053620480. Its totient is φ = 12879511224320.

The previous prime is 51323594363473. The next prime is 51323594363563. The reversal of 51323594363520 is 2536349532315.

It is a super-2 number, since 2×51323594363520² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256221805 + ... + 256422035.

It is an arithmetic number, because the mean of its divisors is an integer number (676718959455).

Almost surely, 2^{51323594363520} 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 51323594363520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86620026810240).

51323594363520 is an abundant number, since it is smaller than the sum of its proper divisors (121916459256960).

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

51323594363520 is a wasteful number, since it uses less digits than its factorization.

51323594363520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208123 (or 208111 counting only the distinct ones).

The product of its (nonzero) digits is 8748000, while the sum is 51.

The spelling of 51323594363520 in words is "fifty-one trillion, three hundred twenty-three billion, five hundred ninety-four million, three hundred sixty-three thousand, five hundred twenty".