18336867202453 has 2 divisors, whose sum is σ = 18336867202454. Its totient is φ = 18336867202452.

The previous prime is 18336867202441. The next prime is 18336867202463. The reversal of 18336867202453 is 35420276863381.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17982154048369 + 354713154084 = 4240537^2 + 595578^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18336867202453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18336867202463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9168433601226 + 9168433601227.

It is an arithmetic number, because the mean of its divisors is an integer number (9168433601227).

Almost surely, 2^{18336867202453} is an apocalyptic number.

It is an amenable number.

18336867202453 is a deficient number, since it is larger than the sum of its proper divisors (1).

18336867202453 is an equidigital number, since it uses as much as digits as its factorization.

18336867202453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34836480, while the sum is 58.

The spelling of 18336867202453 in words is "eighteen trillion, three hundred thirty-six billion, eight hundred sixty-seven million, two hundred two thousand, four hundred fifty-three".