51543124000000 has 252 divisors, whose sum is σ = 135373345324000. Its totient is φ = 19532102400000.

The previous prime is 51543123999959. The next prime is 51543124000009. The reversal of 51543124000000 is 42134515.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51543124000009) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 75660901 + ... + 76339099.

Almost surely, 2^{51543124000000} is an apocalyptic number.

51543124000000 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 51543124000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67686672662000).

51543124000000 is an abundant number, since it is smaller than the sum of its proper divisors (83830221324000).

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

51543124000000 is an frugal number, since it uses more digits than its factorization.

51543124000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678264 (or 678225 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 51543124000000 its reverse (42134515), we get a palindrome (51543166134515).

The spelling of 51543124000000 in words is "fifty-one trillion, five hundred forty-three billion, one hundred twenty-four million", and thus it is an aban number.