12855818551 has 8 divisors (see below), whose sum is σ = 13534629680. Its totient is φ = 12177226368.

The previous prime is 12855818539. The next prime is 12855818593. The reversal of 12855818551 is 15581855821.

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

It is a cyclic number.

It is not a de Polignac number, because 12855818551 - 2¹¹ = 12855816503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12855818495 and 12855818504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12855818531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73525 + ... + 176401.

It is an arithmetic number, because the mean of its divisors is an integer number (1691828710).

Almost surely, 2^12855818551 is an apocalyptic number.

12855818551 is a deficient number, since it is larger than the sum of its proper divisors (678811129).

12855818551 is a wasteful number, since it uses less digits than its factorization.

12855818551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109473.

The product of its digits is 640000, while the sum is 49.

The spelling of 12855818551 in words is "twelve billion, eight hundred fifty-five million, eight hundred eighteen thousand, five hundred fifty-one".