51233611544500 has 192 divisors, whose sum is σ = 140088192491520. Its totient is φ = 15902099472000.

The previous prime is 51233611544473. The next prime is 51233611544509. The reversal of 51233611544500 is 544511633215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51233611544509) 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, 6417519 + ... + 11985481.

It is an arithmetic number, because the mean of its divisors is an integer number (729626002560).

Almost surely, 2^{51233611544500} is an apocalyptic number.

51233611544500 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 51233611544500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70044096245760).

51233611544500 is an abundant number, since it is smaller than the sum of its proper divisors (88854580947020).

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

51233611544500 is a wasteful number, since it uses less digits than its factorization.

51233611544500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5568239 (or 5568227 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 51233611544500 in words is "fifty-one trillion, two hundred thirty-three billion, six hundred eleven million, five hundred forty-four thousand, five hundred".