13608312545 has 4 divisors (see below), whose sum is σ = 16329975060. Its totient is φ = 10886650032.

The previous prime is 13608312539. The next prime is 13608312617. The reversal of 13608312545 is 54521380631.

It is a happy number.

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 6864453904 + 6743858641 = 82852^2 + 82121^2 .

It is a cyclic number.

It is not a de Polignac number, because 13608312545 - 2⁶ = 13608312481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13608312499 and 13608312508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1360831250 + ... + 1360831259.

It is an arithmetic number, because the mean of its divisors is an integer number (4082493765).

Almost surely, 2^13608312545 is an apocalyptic number.

It is an amenable number.

13608312545 is a deficient number, since it is larger than the sum of its proper divisors (2721662515).

13608312545 is an equidigital number, since it uses as much as digits as its factorization.

13608312545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2721662514.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 13608312545 in words is "thirteen billion, six hundred eight million, three hundred twelve thousand, five hundred forty-five".