11943849601 has 4 divisors (see below), whose sum is σ = 12329135104. Its totient is φ = 11558564100.

The previous prime is 11943849587. The next prime is 11943849629. The reversal of 11943849601 is 10694834911.

11943849601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 10694834911 = 199 ⋅53742889.

It is a cyclic number.

It is not a de Polignac number, because 11943849601 - 2⁷ = 11943849473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11943849661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192642705 + ... + 192642766.

It is an arithmetic number, because the mean of its divisors is an integer number (3082283776).

Almost surely, 2^11943849601 is an apocalyptic number.

It is an amenable number.

11943849601 is a deficient number, since it is larger than the sum of its proper divisors (385285503).

11943849601 is an equidigital number, since it uses as much as digits as its factorization.

11943849601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385285502.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 11943849601 in words is "eleven billion, nine hundred forty-three million, eight hundred forty-nine thousand, six hundred one".