51043322240 has 256 divisors, whose sum is σ = 133051248000. Its totient is φ = 18666160128.

The previous prime is 51043322227. The next prime is 51043322257. The reversal of 51043322240 is 4222334015.

It is a congruent number.

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, 46529372 + ... + 46530468.

Almost surely, 2^51043322240 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 51043322240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66525624000).

51043322240 is an abundant number, since it is smaller than the sum of its proper divisors (82007925760).

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

51043322240 is a wasteful number, since it uses less digits than its factorization.

51043322240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277 (or 1265 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 51043322240 its reverse (4222334015), we get a palindrome (55265656255).

The spelling of 51043322240 in words is "fifty-one billion, forty-three million, three hundred twenty-two thousand, two hundred forty".