12281411491 has 4 divisors (see below), whose sum is σ = 12320154432. Its totient is φ = 12242668552.

The previous prime is 12281411447. The next prime is 12281411533. The reversal of 12281411491 is 19411418221.

It is a happy number.

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 12281411491 - 2⁹ = 12281410979 is a prime.

It is a super-2 number, since 2×12281411491² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12281411411) 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, 19370995 + ... + 19371628.

It is an arithmetic number, because the mean of its divisors is an integer number (3080038608).

Almost surely, 2^12281411491 is an apocalyptic number.

12281411491 is a deficient number, since it is larger than the sum of its proper divisors (38742941).

12281411491 is an equidigital number, since it uses as much as digits as its factorization.

12281411491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38742940.

The product of its digits is 4608, while the sum is 34.

The spelling of 12281411491 in words is "twelve billion, two hundred eighty-one million, four hundred eleven thousand, four hundred ninety-one".