13563435327 has 16 divisors (see below), whose sum is σ = 19525789920. Its totient is φ = 8325263232.

The previous prime is 13563435307. The next prime is 13563435337. The reversal of 13563435327 is 72353436531.

It is a happy number.

It is not a de Polignac number, because 13563435327 - 2⁸ = 13563435071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13563435307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431848 + ... + 462189.

It is an arithmetic number, because the mean of its divisors is an integer number (1220361870).

Almost surely, 2^13563435327 is an apocalyptic number.

13563435327 is a deficient number, since it is larger than the sum of its proper divisors (5962354593).

13563435327 is a wasteful number, since it uses less digits than its factorization.

13563435327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894442.

The product of its digits is 680400, while the sum is 42.

The spelling of 13563435327 in words is "thirteen billion, five hundred sixty-three million, four hundred thirty-five thousand, three hundred twenty-seven".