51144351140 has 12 divisors (see below), whose sum is σ = 107403137436. Its totient is φ = 20457740448.

The previous prime is 51144351133. The next prime is 51144351151. The reversal of 51144351140 is 4115344115.

It can be written as a sum of positive squares in 2 ways, for example, as 27467758756 + 23676592384 = 165734^2 + 153872^2 .

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 3 ways as a sum of consecutive naturals, for example, 1278608759 + ... + 1278608798.

It is an arithmetic number, because the mean of its divisors is an integer number (8950261453).

Almost surely, 2^51144351140 is an apocalyptic number.

It is an amenable number.

51144351140 is an abundant number, since it is smaller than the sum of its proper divisors (56258786296).

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

51144351140 is a wasteful number, since it uses less digits than its factorization.

51144351140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557217566 (or 2557217564 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 51144351140 its reverse (4115344115), we get a palindrome (55259695255).

The spelling of 51144351140 in words is "fifty-one billion, one hundred forty-four million, three hundred fifty-one thousand, one hundred forty".