12655553511 has 16 divisors (see below), whose sum is σ = 17736263424. Its totient is φ = 8011295424.

The previous prime is 12655553509. The next prime is 12655553527. The reversal of 12655553511 is 11535555621.

It is not a de Polignac number, because 12655553511 - 2¹ = 12655553509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12655553511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12655553011) 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, 659941 + ... + 678846.

It is an arithmetic number, because the mean of its divisors is an integer number (1108516464).

Almost surely, 2^12655553511 is an apocalyptic number.

12655553511 is a deficient number, since it is larger than the sum of its proper divisors (5080709913).

12655553511 is a wasteful number, since it uses less digits than its factorization.

12655553511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338950.

The product of its digits is 112500, while the sum is 39.

The spelling of 12655553511 in words is "twelve billion, six hundred fifty-five million, five hundred fifty-three thousand, five hundred eleven".