12449018881 has 8 divisors (see below), whose sum is σ = 13718418560. Its totient is φ = 11224159632.

The previous prime is 12449018851. The next prime is 12449018909. The reversal of 12449018881 is 18881094421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12449018881 - 2⁵ = 12449018849 is a prime.

It is a super-2 number, since 2×12449018881² (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 (12449018831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11134521 + ... + 11135638.

It is an arithmetic number, because the mean of its divisors is an integer number (1714802320).

Almost surely, 2^12449018881 is an apocalyptic number.

It is an amenable number.

12449018881 is a deficient number, since it is larger than the sum of its proper divisors (1269399679).

12449018881 is a wasteful number, since it uses less digits than its factorization.

12449018881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22270215.

The product of its (nonzero) digits is 147456, while the sum is 46.

The spelling of 12449018881 in words is "twelve billion, four hundred forty-nine million, eighteen thousand, eight hundred eighty-one".