13660355563 has 8 divisors (see below), whose sum is σ = 14031343440. Its totient is φ = 13289461920.

The previous prime is 13660355507. The next prime is 13660355591. The reversal of 13660355563 is 36555306631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13660355563 - 2²⁵ = 13626801131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13660355503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349248 + ... + 386386.

It is an arithmetic number, because the mean of its divisors is an integer number (1753917930).

Almost surely, 2^13660355563 is an apocalyptic number.

13660355563 is a deficient number, since it is larger than the sum of its proper divisors (370987877).

13660355563 is an equidigital number, since it uses as much as digits as its factorization.

13660355563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47117.

The product of its (nonzero) digits is 729000, while the sum is 43.

The spelling of 13660355563 in words is "thirteen billion, six hundred sixty million, three hundred fifty-five thousand, five hundred sixty-three".