13564066485 has 32 divisors (see below), whose sum is σ = 21894727680. Its totient is φ = 7170344768.

The previous prime is 13564066469. The next prime is 13564066487. The reversal of 13564066485 is 58466046531.

It is a cyclic number.

It is not a de Polignac number, because 13564066485 - 2⁴ = 13564066469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13564066487) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 891754 + ... + 906836.

It is an arithmetic number, because the mean of its divisors is an integer number (684210240).

Almost surely, 2^13564066485 is an apocalyptic number.

13564066485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13564066485 is a deficient number, since it is larger than the sum of its proper divisors (8330661195).

13564066485 is a wasteful number, since it uses less digits than its factorization.

13564066485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15617.

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 13564066485 in words is "thirteen billion, five hundred sixty-four million, sixty-six thousand, four hundred eighty-five".