51423505034240 has 352 divisors, whose sum is σ = 134360442316800. Its totient is φ = 18812725493760.

The previous prime is 51423505034227. The next prime is 51423505034267. The reversal of 51423505034240 is 4243050532415.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 51423505034194 and 51423505034203.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1263549572 + ... + 1263590268.

Almost surely, 2^{51423505034240} 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 51423505034240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67180221158400).

51423505034240 is an abundant number, since it is smaller than the sum of its proper divisors (82936937282560).

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

51423505034240 is a wasteful number, since it uses less digits than its factorization.

51423505034240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41191 (or 41173 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 51423505034240 its reverse (4243050532415), we get a palindrome (55666555566655).

The spelling of 51423505034240 in words is "fifty-one trillion, four hundred twenty-three billion, five hundred five million, thirty-four thousand, two hundred forty".