18670351683653 has 2 divisors, whose sum is σ = 18670351683654. Its totient is φ = 18670351683652.

The previous prime is 18670351683631. The next prime is 18670351683703. The reversal of 18670351683653 is 35638615307681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9806054257444 + 8864297426209 = 3131462^2 + 2977297^2 .

It is a cyclic number.

It is not a de Polignac number, because 18670351683653 - 2¹⁰ = 18670351682629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18670351083653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9335175841826 + 9335175841827.

It is an arithmetic number, because the mean of its divisors is an integer number (9335175841827).

Almost surely, 2^{18670351683653} is an apocalyptic number.

It is an amenable number.

18670351683653 is a deficient number, since it is larger than the sum of its proper divisors (1).

18670351683653 is an equidigital number, since it uses as much as digits as its factorization.

18670351683653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65318400, while the sum is 62.

The spelling of 18670351683653 in words is "eighteen trillion, six hundred seventy billion, three hundred fifty-one million, six hundred eighty-three thousand, six hundred fifty-three".