13211545655 has 16 divisors (see below), whose sum is σ = 19765845504. Its totient is φ = 8235768480.

The previous prime is 13211545639. The next prime is 13211545657. The reversal of 13211545655 is 55654511231.

It is not a de Polignac number, because 13211545655 - 2⁴ = 13211545639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13211545657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17157467 + ... + 17158236.

It is an arithmetic number, because the mean of its divisors is an integer number (1235365344).

Almost surely, 2^13211545655 is an apocalyptic number.

13211545655 is a deficient number, since it is larger than the sum of its proper divisors (6554299849).

13211545655 is a wasteful number, since it uses less digits than its factorization.

13211545655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34315726.

The product of its digits is 90000, while the sum is 38.

The spelling of 13211545655 in words is "thirteen billion, two hundred eleven million, five hundred forty-five thousand, six hundred fifty-five".