551560511617 has 2 divisors, whose sum is σ = 551560511618. Its totient is φ = 551560511616.

The previous prime is 551560511599. The next prime is 551560511641. The reversal of 551560511617 is 716115065155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 536122697616 + 15437814001 = 732204^2 + 124249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551560511617 is a prime.

It is not a weakly prime, because it can be changed into another prime (551560511317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275780255808 + 275780255809.

It is an arithmetic number, because the mean of its divisors is an integer number (275780255809).

Almost surely, 2^551560511617 is an apocalyptic number.

It is an amenable number.

551560511617 is a deficient number, since it is larger than the sum of its proper divisors (1).

551560511617 is an equidigital number, since it uses as much as digits as its factorization.

551560511617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157500, while the sum is 43.

The spelling of 551560511617 in words is "five hundred fifty-one billion, five hundred sixty million, five hundred eleven thousand, six hundred seventeen".