11316511655 has 4 divisors (see below), whose sum is σ = 13579813992. Its totient is φ = 9053209320.

The previous prime is 11316511651. The next prime is 11316511691. The reversal of 11316511655 is 55611561311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55611561311 = 433 ⋅128433167.

It is not a de Polignac number, because 11316511655 - 2² = 11316511651 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 (11316511651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131651161 + ... + 1131651170.

It is an arithmetic number, because the mean of its divisors is an integer number (3394953498).

Almost surely, 2^11316511655 is an apocalyptic number.

11316511655 is a deficient number, since it is larger than the sum of its proper divisors (2263302337).

11316511655 is an equidigital number, since it uses as much as digits as its factorization.

11316511655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263302336.

The product of its digits is 13500, while the sum is 35.

The spelling of 11316511655 in words is "eleven billion, three hundred sixteen million, five hundred eleven thousand, six hundred fifty-five".