13205734655 has 4 divisors (see below), whose sum is σ = 15846881592. Its totient is φ = 10564587720.

The previous prime is 13205734637. The next prime is 13205734681. The reversal of 13205734655 is 55643750231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55643750231 = 227 ⋅245126653.

It is not a de Polignac number, because 13205734655 - 2¹⁰ = 13205733631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1320573461 + ... + 1320573470.

It is an arithmetic number, because the mean of its divisors is an integer number (3961720398).

Almost surely, 2^13205734655 is an apocalyptic number.

13205734655 is a deficient number, since it is larger than the sum of its proper divisors (2641146937).

13205734655 is an equidigital number, since it uses as much as digits as its factorization.

13205734655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2641146936.

The product of its (nonzero) digits is 378000, while the sum is 41.

The spelling of 13205734655 in words is "thirteen billion, two hundred five million, seven hundred thirty-four thousand, six hundred fifty-five".