11721454467 has 4 divisors (see below), whose sum is σ = 15628605960. Its totient is φ = 7814302976.

The previous prime is 11721454447. The next prime is 11721454501. The reversal of 11721454467 is 76445412711.

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 11721454467 - 2⁸ = 11721454211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11721454417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1953575742 + ... + 1953575747.

It is an arithmetic number, because the mean of its divisors is an integer number (3907151490).

Almost surely, 2^11721454467 is an apocalyptic number.

11721454467 is a deficient number, since it is larger than the sum of its proper divisors (3907151493).

11721454467 is an equidigital number, since it uses as much as digits as its factorization.

11721454467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907151492.

The product of its digits is 188160, while the sum is 42.

The spelling of 11721454467 in words is "eleven billion, seven hundred twenty-one million, four hundred fifty-four thousand, four hundred sixty-seven".