51705486736672 has 48 divisors (see below), whose sum is σ = 102040466859072. Its totient is φ = 25790490799360.

The previous prime is 51705486736639. The next prime is 51705486736693. The reversal of 51705486736672 is 27663768450715.

It is a junction number, because it is equal to n+sod(n) for n = 51705486736598 and 51705486736607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37650003 + ... + 38999149.

It is an arithmetic number, because the mean of its divisors is an integer number (2125843059564).

Almost surely, 2^{51705486736672} is an apocalyptic number.

It is an amenable number.

51705486736672 is a deficient number, since it is larger than the sum of its proper divisors (50334980122400).

51705486736672 is a wasteful number, since it uses less digits than its factorization.

51705486736672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352041 (or 1352033 counting only the distinct ones).

The product of its (nonzero) digits is 355622400, while the sum is 67.

The spelling of 51705486736672 in words is "fifty-one trillion, seven hundred five billion, four hundred eighty-six million, seven hundred thirty-six thousand, six hundred seventy-two".