555660061603 has 2 divisors, whose sum is σ = 555660061604. Its totient is φ = 555660061602.

The previous prime is 555660061549. The next prime is 555660061699. The reversal of 555660061603 is 306160066555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 555660061603 - 2¹⁷ = 555659930531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 555660061603.

It is not a weakly prime, because it can be changed into another prime (555660061403) 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, 277830030801 + 277830030802.

It is an arithmetic number, because the mean of its divisors is an integer number (277830030802).

Almost surely, 2^555660061603 is an apocalyptic number.

555660061603 is a deficient number, since it is larger than the sum of its proper divisors (1).

555660061603 is an equidigital number, since it uses as much as digits as its factorization.

555660061603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486000, while the sum is 43.

The spelling of 555660061603 in words is "five hundred fifty-five billion, six hundred sixty million, sixty-one thousand, six hundred three".