12911097489 has 16 divisors (see below), whose sum is σ = 17657352000. Its totient is φ = 8388301376.

The previous prime is 12911097473. The next prime is 12911097503. The reversal of 12911097489 is 98479011921.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12911097489 - 2⁴ = 12911097473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12911097439) 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, 248799 + ... + 296180.

It is an arithmetic number, because the mean of its divisors is an integer number (1103584500).

Almost surely, 2^12911097489 is an apocalyptic number.

It is an amenable number.

12911097489 is a deficient number, since it is larger than the sum of its proper divisors (4746254511).

12911097489 is a wasteful number, since it uses less digits than its factorization.

12911097489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545184.

The product of its (nonzero) digits is 326592, while the sum is 51.

The spelling of 12911097489 in words is "twelve billion, nine hundred eleven million, ninety-seven thousand, four hundred eighty-nine".