51121045024 has 192 divisors, whose sum is σ = 122494982400. Its totient is φ = 20539588608.

The previous prime is 51121044943. The next prime is 51121045043. The reversal of 51121045024 is 42054012115.

51121045024 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51121045024² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51121045024.

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, 31771132 + ... + 31772740.

It is an arithmetic number, because the mean of its divisors is an integer number (637994700).

Almost surely, 2^51121045024 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 51121045024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61247491200).

51121045024 is an abundant number, since it is smaller than the sum of its proper divisors (71373937376).

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

51121045024 is a wasteful number, since it uses less digits than its factorization.

51121045024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795 (or 1787 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 51121045024 its reverse (42054012115), we get a palindrome (93175057139).

The spelling of 51121045024 in words is "fifty-one billion, one hundred twenty-one million, forty-five thousand, twenty-four".