12784498320385 has 32 divisors (see below), whose sum is σ = 16782645888000. Its totient is φ = 9271970769600.

The previous prime is 12784498320353. The next prime is 12784498320397. The reversal of 12784498320385 is 58302389448721.

It is not a de Polignac number, because 12784498320385 - 2⁵ = 12784498320353 is a prime.

It is a super-2 number, since 2×12784498320385² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35251084 + ... + 35611906.

It is an arithmetic number, because the mean of its divisors is an integer number (524457684000).

Almost surely, 2^{12784498320385} is an apocalyptic number.

It is an amenable number.

12784498320385 is a deficient number, since it is larger than the sum of its proper divisors (3998147567615).

12784498320385 is a wasteful number, since it uses less digits than its factorization.

12784498320385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362629.

The product of its (nonzero) digits is 92897280, while the sum is 64.

The spelling of 12784498320385 in words is "twelve trillion, seven hundred eighty-four billion, four hundred ninety-eight million, three hundred twenty thousand, three hundred eighty-five".