18861054673603 has 2 divisors, whose sum is σ = 18861054673604. Its totient is φ = 18861054673602.

The previous prime is 18861054673561. The next prime is 18861054673631. The reversal of 18861054673603 is 30637645016881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18861054673603 - 2²⁹ = 18860517802691 is a prime.

It is not a weakly prime, because it can be changed into another prime (18861054673663) 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, 9430527336801 + 9430527336802.

It is an arithmetic number, because the mean of its divisors is an integer number (9430527336802).

Almost surely, 2^{18861054673603} is an apocalyptic number.

18861054673603 is a deficient number, since it is larger than the sum of its proper divisors (1).

18861054673603 is an equidigital number, since it uses as much as digits as its factorization.

18861054673603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 18861054673603 in words is "eighteen trillion, eight hundred sixty-one billion, fifty-four million, six hundred seventy-three thousand, six hundred three".