655745547539 has 2 divisors, whose sum is σ = 655745547540. Its totient is φ = 655745547538.

The previous prime is 655745547493. The next prime is 655745547607. The reversal of 655745547539 is 935745547556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655745547539 - 2¹² = 655745543443 is a prime.

It is not a weakly prime, because it can be changed into another prime (655745547139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327872773769 + 327872773770.

It is an arithmetic number, because the mean of its divisors is an integer number (327872773770).

Almost surely, 2^655745547539 is an apocalyptic number.

655745547539 is a deficient number, since it is larger than the sum of its proper divisors (1).

655745547539 is an equidigital number, since it uses as much as digits as its factorization.

655745547539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 396900000, while the sum is 65.

The spelling of 655745547539 in words is "six hundred fifty-five billion, seven hundred forty-five million, five hundred forty-seven thousand, five hundred thirty-nine".