11663346613 has 4 divisors (see below), whose sum is σ = 11668395808. Its totient is φ = 11658297420.

The previous prime is 11663346601. The next prime is 11663346647. The reversal of 11663346613 is 31664336611.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 11663346613 - 2³³ = 3073412021 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 (11663346683) 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, 2521131 + ... + 2525752.

It is an arithmetic number, because the mean of its divisors is an integer number (2917098952).

Almost surely, 2^11663346613 is an apocalyptic number.

It is an amenable number.

11663346613 is a deficient number, since it is larger than the sum of its proper divisors (5049195).

11663346613 is an equidigital number, since it uses as much as digits as its factorization.

11663346613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5049194.

The product of its digits is 139968, while the sum is 40.

The spelling of 11663346613 in words is "eleven billion, six hundred sixty-three million, three hundred forty-six thousand, six hundred thirteen".