51330123234500 has 144 divisors (see below), whose sum is σ = 123978831465216. Its totient is φ = 18550983528000.

The previous prime is 51330123234487. The next prime is 51330123234571. The reversal of 51330123234500 is 543232103315.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7258949 + ... + 12464051.

Almost surely, 2^{51330123234500} is an apocalyptic number.

51330123234500 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 51330123234500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61989415732608).

51330123234500 is an abundant number, since it is smaller than the sum of its proper divisors (72648708230716).

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

51330123234500 is a wasteful number, since it uses less digits than its factorization.

51330123234500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205307 (or 5205284 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 51330123234500 its reverse (543232103315), we get a palindrome (51873355337815).

The spelling of 51330123234500 in words is "fifty-one trillion, three hundred thirty billion, one hundred twenty-three million, two hundred thirty-four thousand, five hundred".