12864406877089 has 8 divisors (see below), whose sum is σ = 13308210317160. Its totient is φ = 12420616983936.

The previous prime is 12864406877041. The next prime is 12864406877129. The reversal of 12864406877089 is 98077860446821.

It can be written as a sum of positive squares in 4 ways, for example, as 3087372296464 + 9777034580625 = 1757092^2 + 3126825^2 .

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 12864406877089 - 2²³ = 12864398488481 is a prime.

It is a super-2 number, since 2×12864406877089² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12864406877009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1435674 + ... + 5271619.

It is an arithmetic number, because the mean of its divisors is an integer number (1663526289645).

Almost surely, 2^{12864406877089} is an apocalyptic number.

It is an amenable number.

12864406877089 is a deficient number, since it is larger than the sum of its proper divisors (443803440071).

12864406877089 is an equidigital number, since it uses as much as digits as its factorization.

12864406877089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6773459.

The product of its (nonzero) digits is 260112384, while the sum is 70.

The spelling of 12864406877089 in words is "twelve trillion, eight hundred sixty-four billion, four hundred six million, eight hundred seventy-seven thousand, eighty-nine".