13649195561 has 8 divisors (see below), whose sum is σ = 14287938048. Its totient is φ = 13022856000.

The previous prime is 13649195557. The next prime is 13649195597. The reversal of 13649195561 is 16559194631.

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

It is a cyclic number.

It is not a de Polignac number, because 13649195561 - 2² = 13649195557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13649192561) 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, 3098480 + ... + 3102881.

It is an arithmetic number, because the mean of its divisors is an integer number (1785992256).

Almost surely, 2^13649195561 is an apocalyptic number.

It is an amenable number.

13649195561 is a deficient number, since it is larger than the sum of its proper divisors (638742487).

13649195561 is an equidigital number, since it uses as much as digits as its factorization.

13649195561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6201463.

The product of its digits is 874800, while the sum is 50.

The spelling of 13649195561 in words is "thirteen billion, six hundred forty-nine million, one hundred ninety-five thousand, five hundred sixty-one".