13603551645653 has 2 divisors, whose sum is σ = 13603551645654. Its totient is φ = 13603551645652.

The previous prime is 13603551645643. The next prime is 13603551645713. The reversal of 13603551645653 is 35654615530631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12860952371089 + 742599274564 = 3586217^2 + 861742^2 .

It is an emirp because it is prime and its reverse (35654615530631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13603551645653 - 2²⁴ = 13603534868437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13603551645595 and 13603551645604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13603551645643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6801775822826 + 6801775822827.

It is an arithmetic number, because the mean of its divisors is an integer number (6801775822827).

Almost surely, 2^{13603551645653} is an apocalyptic number.

It is an amenable number.

13603551645653 is a deficient number, since it is larger than the sum of its proper divisors (1).

13603551645653 is an equidigital number, since it uses as much as digits as its factorization.

13603551645653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580000, while the sum is 53.

The spelling of 13603551645653 in words is "thirteen trillion, six hundred three billion, five hundred fifty-one million, six hundred forty-five thousand, six hundred fifty-three".