18660554743 has 2 divisors, whose sum is σ = 18660554744. Its totient is φ = 18660554742.

The previous prime is 18660554723. The next prime is 18660554777. The reversal of 18660554743 is 34745506681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18660554743 - 2²⁵ = 18627000311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18660554723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9330277371 + 9330277372.

It is an arithmetic number, because the mean of its divisors is an integer number (9330277372).

Almost surely, 2^18660554743 is an apocalyptic number.

18660554743 is a deficient number, since it is larger than the sum of its proper divisors (1).

18660554743 is an equidigital number, since it uses as much as digits as its factorization.

18660554743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2419200, while the sum is 49.

The spelling of 18660554743 in words is "eighteen billion, six hundred sixty million, five hundred fifty-four thousand, seven hundred forty-three".