11123649613 has 4 divisors (see below), whose sum is σ = 11170192320. Its totient is φ = 11077106908.

The previous prime is 11123649611. The next prime is 11123649619. The reversal of 11123649613 is 31694632111.

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: 31694632111 = 117563 ⋅269597.

It is a cyclic number.

It is not a de Polignac number, because 11123649613 - 2¹ = 11123649611 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 (11123649611) 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, 23270995 + ... + 23271472.

It is an arithmetic number, because the mean of its divisors is an integer number (2792548080).

Almost surely, 2^11123649613 is an apocalyptic number.

It is an amenable number.

11123649613 is a deficient number, since it is larger than the sum of its proper divisors (46542707).

11123649613 is an equidigital number, since it uses as much as digits as its factorization.

11123649613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46542706.

The product of its digits is 23328, while the sum is 37.

The spelling of 11123649613 in words is "eleven billion, one hundred twenty-three million, six hundred forty-nine thousand, six hundred thirteen".