13654623609 has 27 divisors (see below), whose sum is σ = 21685503567. Its totient is φ = 8273192400.

The previous prime is 13654623569. The next prime is 13654623667. The reversal of 13654623609 is 90632645631.

The square root of 13654623609 is 116853.

It is a perfect power (a square), and thus also a powerful number.

13654623609 is a `hidden beast` number, since 1 + 36 + 5 + 4 + 6 + 2 + 3 + 609 = 666.

13654623609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5715813609 + 7938810000 = 75603^2 + 89100^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13654623609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13654623679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3854379 + ... + 3857919.

Almost surely, 2^13654623609 is an apocalyptic number.

13654623609 is the 116853-rd square number.

13654623609 is the 58427-th centered octagonal number.

It is an amenable number.

13654623609 is a deficient number, since it is larger than the sum of its proper divisors (8030879958).

13654623609 is an frugal number, since it uses more digits than its factorization.

13654623609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7110 (or 3555 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The spelling of 13654623609 in words is "thirteen billion, six hundred fifty-four million, six hundred twenty-three thousand, six hundred nine".