51152220340 has 144 divisors (see below), whose sum is σ = 122926809600. Its totient is φ = 17834978304.

The previous prime is 51152220319. The next prime is 51152220341. The reversal of 51152220340 is 4302225115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51152220341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6137296 + ... + 6145624.

It is an arithmetic number, because the mean of its divisors is an integer number (853658400).

Almost surely, 2^51152220340 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 51152220340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61463404800).

51152220340 is an abundant number, since it is smaller than the sum of its proper divisors (71774589260).

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

51152220340 is a wasteful number, since it uses less digits than its factorization.

51152220340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8466 (or 8451 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 51152220340 its reverse (4302225115), we get a palindrome (55454445455).

The spelling of 51152220340 in words is "fifty-one billion, one hundred fifty-two million, two hundred twenty thousand, three hundred forty".