18541868374663 has 2 divisors, whose sum is σ = 18541868374664. Its totient is φ = 18541868374662.

The previous prime is 18541868374607. The next prime is 18541868374699. The reversal of 18541868374663 is 36647386814581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18541868374663 - 2⁹ = 18541868374151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18541868374592 and 18541868374601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18541868324663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9270934187331 + 9270934187332.

It is an arithmetic number, because the mean of its divisors is an integer number (9270934187332).

Almost surely, 2^{18541868374663} is an apocalyptic number.

18541868374663 is a deficient number, since it is larger than the sum of its proper divisors (1).

18541868374663 is an equidigital number, since it uses as much as digits as its factorization.

18541868374663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 557383680, while the sum is 70.

The spelling of 18541868374663 in words is "eighteen trillion, five hundred forty-one billion, eight hundred sixty-eight million, three hundred seventy-four thousand, six hundred sixty-three".