13205677655 has 32 divisors (see below), whose sum is σ = 17026329600. Its totient is φ = 9813715072.

The previous prime is 13205677649. The next prime is 13205677699. The reversal of 13205677655 is 55677650231.

It is not a de Polignac number, because 13205677655 - 2⁶ = 13205677591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 385664 + ... + 418506.

It is an arithmetic number, because the mean of its divisors is an integer number (532072800).

Almost surely, 2^13205677655 is an apocalyptic number.

13205677655 is a deficient number, since it is larger than the sum of its proper divisors (3820651945).

13205677655 is a wasteful number, since it uses less digits than its factorization.

13205677655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32983.

The product of its (nonzero) digits is 1323000, while the sum is 47.

The spelling of 13205677655 in words is "thirteen billion, two hundred five million, six hundred seventy-seven thousand, six hundred fifty-five".