11991306467 has 16 divisors (see below), whose sum is σ = 14442485760. Its totient is φ = 9725925312.

The previous prime is 11991306463. The next prime is 11991306469. The reversal of 11991306467 is 76460319911.

It is a cyclic number.

It is not a de Polignac number, because 11991306467 - 2² = 11991306463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11991306461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62543 + ... + 167015.

It is an arithmetic number, because the mean of its divisors is an integer number (902655360).

Almost surely, 2^11991306467 is an apocalyptic number.

11991306467 is a deficient number, since it is larger than the sum of its proper divisors (2451179293).

11991306467 is a wasteful number, since it uses less digits than its factorization.

11991306467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105362.

The product of its (nonzero) digits is 244944, while the sum is 47.

The spelling of 11991306467 in words is "eleven billion, nine hundred ninety-one million, three hundred six thousand, four hundred sixty-seven".