11967816057 has 4 divisors (see below), whose sum is σ = 15957088080. Its totient is φ = 7978544036.

The previous prime is 11967816053. The next prime is 11967816079. The reversal of 11967816057 is 75061876911.

11967816057 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.

It is a cyclic number.

It is not a de Polignac number, because 11967816057 - 2² = 11967816053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11967816053) 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, 1994636007 + ... + 1994636012.

It is an arithmetic number, because the mean of its divisors is an integer number (3989272020).

Almost surely, 2^11967816057 is an apocalyptic number.

It is an amenable number.

11967816057 is a deficient number, since it is larger than the sum of its proper divisors (3989272023).

11967816057 is an equidigital number, since it uses as much as digits as its factorization.

11967816057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989272022.

The product of its (nonzero) digits is 635040, while the sum is 51.

The spelling of 11967816057 in words is "eleven billion, nine hundred sixty-seven million, eight hundred sixteen thousand, fifty-seven".