655965569543 has 2 divisors, whose sum is σ = 655965569544. Its totient is φ = 655965569542.

The previous prime is 655965569531. The next prime is 655965569557. The reversal of 655965569543 is 345965569556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655965569543 - 2¹⁰ = 655965568519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655965569503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327982784771 + 327982784772.

It is an arithmetic number, because the mean of its divisors is an integer number (327982784772).

Almost surely, 2^655965569543 is an apocalyptic number.

655965569543 is a deficient number, since it is larger than the sum of its proper divisors (1).

655965569543 is an equidigital number, since it uses as much as digits as its factorization.

655965569543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 656100000, while the sum is 68.

The spelling of 655965569543 in words is "six hundred fifty-five billion, nine hundred sixty-five million, five hundred sixty-nine thousand, five hundred forty-three".