51355022124 has 144 divisors (see below), whose sum is σ = 140588448000. Its totient is φ = 14547496320.

The previous prime is 51355022123. The next prime is 51355022129. The reversal of 51355022124 is 42122055315.

It is a junction number, because it is equal to n+sod(n) for n = 51355022091 and 51355022100.

It is not an unprimeable number, because it can be changed into a prime (51355022123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53107089 + ... + 53108055.

Almost surely, 2^51355022124 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 51355022124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70294224000).

51355022124 is an abundant number, since it is smaller than the sum of its proper divisors (89233425876).

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

51355022124 is a wasteful number, since it uses less digits than its factorization.

51355022124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668 (or 1659 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 51355022124 its reverse (42122055315), we get a palindrome (93477077439).

The spelling of 51355022124 in words is "fifty-one billion, three hundred fifty-five million, twenty-two thousand, one hundred twenty-four".