51485917133344 has 24 divisors (see below), whose sum is σ = 102102774542748. Its totient is φ = 25555053757440.

The previous prime is 51485917133291. The next prime is 51485917133353. The reversal of 51485917133344 is 44333171958415.

It can be written as a sum of positive squares in 2 ways, for example, as 45987548713744 + 5498368419600 = 6781412^2 + 2344860^2 .

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, 5872020837 + ... + 5872029604.

Almost surely, 2^{51485917133344} is an apocalyptic number.

It is an amenable number.

51485917133344 is a deficient number, since it is larger than the sum of its proper divisors (50616857409404).

51485917133344 is a wasteful number, since it uses less digits than its factorization.

51485917133344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11744050588 (or 11744050580 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 58.

The spelling of 51485917133344 in words is "fifty-one trillion, four hundred eighty-five billion, nine hundred seventeen million, one hundred thirty-three thousand, three hundred forty-four".