13603456606645 has 4 divisors (see below), whose sum is σ = 16324147927980. Its totient is φ = 10882765285312.

The previous prime is 13603456606627. The next prime is 13603456606699. The reversal of 13603456606645 is 54660665430631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7295492834289 + 6307963772356 = 2701017^2 + 2511566^2 .

It is a cyclic number.

It is not a de Polignac number, because 13603456606645 - 2¹⁵ = 13603456573877 is a prime.

It is a super-3 number, since 3×13603456606645³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1360345660660 + ... + 1360345660669.

It is an arithmetic number, because the mean of its divisors is an integer number (4081036981995).

Almost surely, 2^{13603456606645} is an apocalyptic number.

It is an amenable number.

13603456606645 is a deficient number, since it is larger than the sum of its proper divisors (2720691321335).

13603456606645 is an equidigital number, since it uses as much as digits as its factorization.

13603456606645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720691321334.

The product of its (nonzero) digits is 27993600, while the sum is 55.

The spelling of 13603456606645 in words is "thirteen trillion, six hundred three billion, four hundred fifty-six million, six hundred six thousand, six hundred forty-five".