51315032004340 has 24 divisors (see below), whose sum is σ = 116050918533480. Its totient is φ = 18947088739968.

The previous prime is 51315032004311. The next prime is 51315032004343. The reversal of 51315032004340 is 4340023051315.

It can be written as a sum of positive squares in 4 ways, for example, as 1606130398224 + 49708901606116 = 1267332^2 + 7050454^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51315032004343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98682753595 + ... + 98682754114.

It is an arithmetic number, because the mean of its divisors is an integer number (4835454938895).

Almost surely, 2^{51315032004340} is an apocalyptic number.

It is an amenable number.

51315032004340 is an abundant number, since it is smaller than the sum of its proper divisors (64735886529140).

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

51315032004340 is a wasteful number, since it uses less digits than its factorization.

51315032004340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197365507731 (or 197365507729 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 51315032004340 its reverse (4340023051315), we get a palindrome (55655055055655).

The spelling of 51315032004340 in words is "fifty-one trillion, three hundred fifteen billion, thirty-two million, four thousand, three hundred forty".