18659357298847 has 2 divisors, whose sum is σ = 18659357298848. Its totient is φ = 18659357298846.

The previous prime is 18659357298793. The next prime is 18659357298889. The reversal of 18659357298847 is 74889275395681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18659357298847 - 2¹¹ = 18659357296799 is a prime.

It is a super-2 number, since 2×18659357298847² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18659357295847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9329678649423 + 9329678649424.

It is an arithmetic number, because the mean of its divisors is an integer number (9329678649424).

Almost surely, 2^{18659357298847} is an apocalyptic number.

18659357298847 is a deficient number, since it is larger than the sum of its proper divisors (1).

18659357298847 is an equidigital number, since it uses as much as digits as its factorization.

18659357298847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7315660800, while the sum is 82.

The spelling of 18659357298847 in words is "eighteen trillion, six hundred fifty-nine billion, three hundred fifty-seven million, two hundred ninety-eight thousand, eight hundred forty-seven".