12351678653 has 4 divisors (see below), whose sum is σ = 12354262620. Its totient is φ = 12349094688.

The previous prime is 12351678629. The next prime is 12351678679. The reversal of 12351678653 is 35687615321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4541007769 + 7810670884 = 67387^2 + 88378^2 .

It is a cyclic number.

It is not a de Polignac number, because 12351678653 - 2⁸ = 12351678397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12351678598 and 12351678607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12351678553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1284800 + ... + 1294377.

It is an arithmetic number, because the mean of its divisors is an integer number (3088565655).

Almost surely, 2^12351678653 is an apocalyptic number.

It is an amenable number.

12351678653 is a deficient number, since it is larger than the sum of its proper divisors (2583967).

12351678653 is an equidigital number, since it uses as much as digits as its factorization.

12351678653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583966.

The product of its digits is 907200, while the sum is 47.

The spelling of 12351678653 in words is "twelve billion, three hundred fifty-one million, six hundred seventy-eight thousand, six hundred fifty-three".