51801041140 has 24 divisors (see below), whose sum is σ = 113511847680. Its totient is φ = 19819528608.

The previous prime is 51801041129. The next prime is 51801041141. The reversal of 51801041140 is 4114010815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51801041141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56305020 + ... + 56305939.

It is an arithmetic number, because the mean of its divisors is an integer number (4729660320).

Almost surely, 2^51801041140 is an apocalyptic number.

It is an amenable number.

51801041140 is an abundant number, since it is smaller than the sum of its proper divisors (61710806540).

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

51801041140 is a wasteful number, since it uses less digits than its factorization.

51801041140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112610991 (or 112610989 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 25.

Adding to 51801041140 its reverse (4114010815), we get a palindrome (55915051955).

The spelling of 51801041140 in words is "fifty-one billion, eight hundred one million, forty-one thousand, one hundred forty".