51727560066164 has 6 divisors (see below), whose sum is σ = 90523230115794. Its totient is φ = 25863780033080.

The previous prime is 51727560066157. The next prime is 51727560066197. The reversal of 51727560066164 is 46166006572715.

It can be written as a sum of positive squares in only one way, i.e., 48601700706064 + 3125859360100 = 6971492^2 + 1768010^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6465945008267 + ... + 6465945008274.

It is an arithmetic number, because the mean of its divisors is an integer number (15087205019299).

Almost surely, 2^{51727560066164} is an apocalyptic number.

It is an amenable number.

51727560066164 is a deficient number, since it is larger than the sum of its proper divisors (38795670049630).

51727560066164 is a wasteful number, since it uses less digits than its factorization.

51727560066164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12931890016545 (or 12931890016543 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 56.

The spelling of 51727560066164 in words is "fifty-one trillion, seven hundred twenty-seven billion, five hundred sixty million, sixty-six thousand, one hundred sixty-four".