11955567297 has 4 divisors (see below), whose sum is σ = 15940756400. Its totient is φ = 7970378196.

The previous prime is 11955567223. The next prime is 11955567319. The reversal of 11955567297 is 79276555911.

11955567297 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 not a de Polignac number, because 11955567297 - 2¹² = 11955563201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11955567097) 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, 1992594547 + ... + 1992594552.

It is an arithmetic number, because the mean of its divisors is an integer number (3985189100).

Almost surely, 2^11955567297 is an apocalyptic number.

It is an amenable number.

11955567297 is a deficient number, since it is larger than the sum of its proper divisors (3985189103).

11955567297 is an equidigital number, since it uses as much as digits as its factorization.

11955567297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3985189102.

The product of its digits is 5953500, while the sum is 57.

The spelling of 11955567297 in words is "eleven billion, nine hundred fifty-five million, five hundred sixty-seven thousand, two hundred ninety-seven".