51440201140 has 12 divisors (see below), whose sum is σ = 108024422436. Its totient is φ = 20576080448.

The previous prime is 51440201123. The next prime is 51440201227. The reversal of 51440201140 is 4110204415.

It can be written as a sum of positive squares in 2 ways, for example, as 9507810064 + 41932391076 = 97508^2 + 204774^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286005009 + ... + 1286005048.

It is an arithmetic number, because the mean of its divisors is an integer number (9002035203).

Almost surely, 2^51440201140 is an apocalyptic number.

It is an amenable number.

51440201140 is an abundant number, since it is smaller than the sum of its proper divisors (56584221296).

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

51440201140 is a wasteful number, since it uses less digits than its factorization.

51440201140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572010066 (or 2572010064 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 51440201140 its reverse (4110204415), we get a palindrome (55550405555).

The spelling of 51440201140 in words is "fifty-one billion, four hundred forty million, two hundred one thousand, one hundred forty".