11957869267 has 4 divisors (see below), whose sum is σ = 11961112696. Its totient is φ = 11954625840.

The previous prime is 11957869201. The next prime is 11957869271. The reversal of 11957869267 is 76296875911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11957869267 - 2¹¹ = 11957867219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11957869667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616178 + ... + 1623559.

It is an arithmetic number, because the mean of its divisors is an integer number (2990278174).

Almost surely, 2^11957869267 is an apocalyptic number.

11957869267 is a deficient number, since it is larger than the sum of its proper divisors (3243429).

11957869267 is an equidigital number, since it uses as much as digits as its factorization.

11957869267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243428.

The product of its digits is 11430720, while the sum is 61.

The spelling of 11957869267 in words is "eleven billion, nine hundred fifty-seven million, eight hundred sixty-nine thousand, two hundred sixty-seven".