12051897354489 has 8 divisors (see below), whose sum is σ = 16069212826912. Its totient is φ = 8034590059200.

The previous prime is 12051897354479. The next prime is 12051897354491. The reversal of 12051897354489 is 98445379815021.

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

It is not a de Polignac number, because 12051897354489 - 2¹⁶ = 12051897288953 is a prime.

It is a super-2 number, since 2×12051897354489² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12051897354479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3702897 + ... + 6149409.

It is an arithmetic number, because the mean of its divisors is an integer number (2008651603364).

Almost surely, 2^{12051897354489} is an apocalyptic number.

It is an amenable number.

12051897354489 is a deficient number, since it is larger than the sum of its proper divisors (4017315472423).

12051897354489 is a wasteful number, since it uses less digits than its factorization.

12051897354489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4088567.

The product of its (nonzero) digits is 87091200, while the sum is 66.

The spelling of 12051897354489 in words is "twelve trillion, fifty-one billion, eight hundred ninety-seven million, three hundred fifty-four thousand, four hundred eighty-nine".