12866723853 has 16 divisors (see below), whose sum is σ = 18607833216. Its totient is φ = 7876328960.

The previous prime is 12866723801. The next prime is 12866723861. The reversal of 12866723853 is 35832766821.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12866723853 - 2⁹ = 12866723341 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 12866723796 and 12866723805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12866723153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3074601 + ... + 3078782.

It is an arithmetic number, because the mean of its divisors is an integer number (1162989576).

Almost surely, 2^12866723853 is an apocalyptic number.

It is an amenable number.

12866723853 is a deficient number, since it is larger than the sum of its proper divisors (5741109363).

12866723853 is a wasteful number, since it uses less digits than its factorization.

12866723853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6153444.

The product of its digits is 2903040, while the sum is 51.

The spelling of 12866723853 in words is "twelve billion, eight hundred sixty-six million, seven hundred twenty-three thousand, eight hundred fifty-three".