11643765449 has 8 divisors (see below), whose sum is σ = 11918577792. Its totient is φ = 11369136240.

The previous prime is 11643765391. The next prime is 11643765457. The reversal of 11643765449 is 94456734611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11643765449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11643765397 and 11643765406.

It is not an unprimeable number, because it can be changed into a prime (11643765349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87392 + ... + 175854.

It is an arithmetic number, because the mean of its divisors is an integer number (1489822224).

Almost surely, 2^11643765449 is an apocalyptic number.

It is an amenable number.

11643765449 is a deficient number, since it is larger than the sum of its proper divisors (274812343).

11643765449 is an equidigital number, since it uses as much as digits as its factorization.

11643765449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91567.

The product of its digits is 2177280, while the sum is 50.

The spelling of 11643765449 in words is "eleven billion, six hundred forty-three million, seven hundred sixty-five thousand, four hundred forty-nine".