12860821649769 has 8 divisors (see below), whose sum is σ = 17149177897632. Its totient is φ = 8573173250880.

The previous prime is 12860821649713. The next prime is 12860821649807. The reversal of 12860821649769 is 96794612806821.

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

It is not a de Polignac number, because 12860821649769 - 2⁸ = 12860821649513 is a prime.

It is a super-2 number, since 2×12860821649769² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12860821649369) 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, 176919847 + ... + 176992524.

It is an arithmetic number, because the mean of its divisors is an integer number (2143647237204).

Almost surely, 2^{12860821649769} is an apocalyptic number.

It is an amenable number.

12860821649769 is a deficient number, since it is larger than the sum of its proper divisors (4288356247863).

12860821649769 is a wasteful number, since it uses less digits than its factorization.

12860821649769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353924487.

The product of its (nonzero) digits is 125411328, while the sum is 69.

The spelling of 12860821649769 in words is "twelve trillion, eight hundred sixty billion, eight hundred twenty-one million, six hundred forty-nine thousand, seven hundred sixty-nine".