13556424065 has 8 divisors (see below), whose sum is σ = 16271960640. Its totient is φ = 10842304752.

The previous prime is 13556424061. The next prime is 13556424107. The reversal of 13556424065 is 56042465531.

It is a happy number.

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 13556424065 - 2² = 13556424061 is a prime.

It is a super-2 number, since 2×13556424065² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13556424061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333155 + ... + 371624.

It is an arithmetic number, because the mean of its divisors is an integer number (2033995080).

Almost surely, 2^13556424065 is an apocalyptic number.

It is an amenable number.

13556424065 is a deficient number, since it is larger than the sum of its proper divisors (2715536575).

13556424065 is an equidigital number, since it uses as much as digits as its factorization.

13556424065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708631.

The product of its (nonzero) digits is 432000, while the sum is 41.

Adding to 13556424065 its reverse (56042465531), we get a palindrome (69598889596).

The spelling of 13556424065 in words is "thirteen billion, five hundred fifty-six million, four hundred twenty-four thousand, sixty-five".