13811655529 has 27 divisors (see below), whose sum is σ = 16324265853. Its totient is φ = 11651700312.

The previous prime is 13811655521. The next prime is 13811655547. The reversal of 13811655529 is 92555611831.

The square root of 13811655529 is 117523.

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

It is not a de Polignac number, because 13811655529 - 2³ = 13811655521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13811655521) 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 26 ways as a sum of consecutive naturals, for example, 84734002 + ... + 84734164.

It is an arithmetic number, because the mean of its divisors is an integer number (604602439).

Almost surely, 2^13811655529 is an apocalyptic number.

13811655529 is the 117523-rd square number.

13811655529 is the 58762-nd centered octagonal number.

It is an amenable number.

13811655529 is a deficient number, since it is larger than the sum of its proper divisors (2512610324).

13811655529 is an frugal number, since it uses more digits than its factorization.

13811655529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546 (or 273 counting only the distinct ones).

The product of its digits is 324000, while the sum is 46.

The spelling of 13811655529 in words is "thirteen billion, eight hundred eleven million, six hundred fifty-five thousand, five hundred twenty-nine".