12345686543211 has 64 divisors (see below), whose sum is σ = 20383897678848. Its totient is φ = 6484785205248.

The previous prime is 12345686543131. The next prime is 12345686543231. The reversal of 12345686543211 is 11234568654321.

It is not a de Polignac number, because 12345686543211 - 2¹⁴ = 12345686526827 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (12345686543231) 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 63 ways as a sum of consecutive naturals, for example, 283311621 + ... + 283355193.

It is an arithmetic number, because the mean of its divisors is an integer number (318498401232).

Almost surely, 2^{12345686543211} is an apocalyptic number.

12345686543211 is a deficient number, since it is larger than the sum of its proper divisors (8038211135637).

12345686543211 is a wasteful number, since it uses less digits than its factorization.

12345686543211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62100.

The product of its digits is 4147200, while the sum is 51.

The spelling of 12345686543211 in words is "twelve trillion, three hundred forty-five billion, six hundred eighty-six million, five hundred forty-three thousand, two hundred eleven".