11611602215311 has 4 divisors (see below), whose sum is σ = 13270402531792. Its totient is φ = 9952801898832.

The previous prime is 11611602215309. The next prime is 11611602215351. The reversal of 11611602215311 is 11351220611611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11611602215311 - 2¹ = 11611602215309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11611602215351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829400158230 + ... + 829400158243.

It is an arithmetic number, because the mean of its divisors is an integer number (3317600632948).

Almost surely, 2^{11611602215311} is an apocalyptic number.

11611602215311 is a deficient number, since it is larger than the sum of its proper divisors (1658800316481).

11611602215311 is an equidigital number, since it uses as much as digits as its factorization.

11611602215311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658800316480.

The product of its (nonzero) digits is 2160, while the sum is 31.

Adding to 11611602215311 its reverse (11351220611611), we get a palindrome (22962822826922).

The spelling of 11611602215311 in words is "eleven trillion, six hundred eleven billion, six hundred two million, two hundred fifteen thousand, three hundred eleven".