51504315144 has 16 divisors (see below), whose sum is σ = 128760787920. Its totient is φ = 17168105040.

The previous prime is 51504315133. The next prime is 51504315157. The reversal of 51504315144 is 44151340515.

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, 1073006542 + ... + 1073006589.

It is an arithmetic number, because the mean of its divisors is an integer number (8047549245).

Almost surely, 2^51504315144 is an apocalyptic number.

It is an amenable number.

51504315144 is an abundant number, since it is smaller than the sum of its proper divisors (77256472776).

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

51504315144 is a wasteful number, since it uses less digits than its factorization.

51504315144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146013140 (or 2146013136 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 51504315144 its reverse (44151340515), we get a palindrome (95655655659).

The spelling of 51504315144 in words is "fifty-one billion, five hundred four million, three hundred fifteen thousand, one hundred forty-four".