51011660550601 has 2 divisors, whose sum is σ = 51011660550602. Its totient is φ = 51011660550600.

The previous prime is 51011660550593. The next prime is 51011660550713. The reversal of 51011660550601 is 10605506611015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46129240006201 + 4882420544400 = 6791851^2 + 2209620^2 .

It is a cyclic number.

It is not a de Polignac number, because 51011660550601 - 2³ = 51011660550593 is a prime.

It is a super-2 number, since 2×51011660550601² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51011660550401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505830275300 + 25505830275301.

It is an arithmetic number, because the mean of its divisors is an integer number (25505830275301).

Almost surely, 2^{51011660550601} is an apocalyptic number.

It is an amenable number.

51011660550601 is a deficient number, since it is larger than the sum of its proper divisors (1).

51011660550601 is an equidigital number, since it uses as much as digits as its factorization.

51011660550601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 51011660550601 in words is "fifty-one trillion, eleven billion, six hundred sixty million, five hundred fifty thousand, six hundred one".