51432334232240 has 240 divisors, whose sum is σ = 135856376927040. Its totient is φ = 17998060861440.

The previous prime is 51432334232239. The next prime is 51432334232269. The reversal of 51432334232240 is 4223243323415.

It is a junction number, because it is equal to n+sod(n) for n = 51432334232194 and 51432334232203.

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, 59538605 + ... + 60396275.

It is an arithmetic number, because the mean of its divisors is an integer number (566068237196).

Almost surely, 2^{51432334232240} 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 51432334232240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67928188463520).

51432334232240 is an abundant number, since it is smaller than the sum of its proper divisors (84424042694800).

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

51432334232240 is a wasteful number, since it uses less digits than its factorization.

51432334232240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857852 (or 857823 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 38.

Adding to 51432334232240 its reverse (4223243323415), we get a palindrome (55655577555655).

The spelling of 51432334232240 in words is "fifty-one trillion, four hundred thirty-two billion, three hundred thirty-four million, two hundred thirty-two thousand, two hundred forty".