11211606613 has 4 divisors (see below), whose sum is σ = 11212558560. Its totient is φ = 11210654668.

The previous prime is 11211606589. The next prime is 11211606713. The reversal of 11211606613 is 31660611211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31660611211 = 59 ⋅536620529.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11211606613 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 (11211606313) 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, 458083 + ... + 481936.

It is an arithmetic number, because the mean of its divisors is an integer number (2803139640).

Almost surely, 2^11211606613 is an apocalyptic number.

It is an amenable number.

11211606613 is a deficient number, since it is larger than the sum of its proper divisors (951947).

11211606613 is an equidigital number, since it uses as much as digits as its factorization.

11211606613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951946.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 11211606613 in words is "eleven billion, two hundred eleven million, six hundred six thousand, six hundred thirteen".