12655304551 has 4 divisors (see below), whose sum is σ = 12700341504. Its totient is φ = 12610267600.

The previous prime is 12655304531. The next prime is 12655304569. The reversal of 12655304551 is 15540355621.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12655304551 - 2³¹ = 10507820903 is a prime.

It is a super-2 number, since 2×12655304551² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12655304551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12655304531) 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 3 ways as a sum of consecutive naturals, for example, 22518055 + ... + 22518616.

It is an arithmetic number, because the mean of its divisors is an integer number (3175085376).

Almost surely, 2^12655304551 is an apocalyptic number.

12655304551 is a deficient number, since it is larger than the sum of its proper divisors (45036953).

12655304551 is an equidigital number, since it uses as much as digits as its factorization.

12655304551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45036952.

The product of its (nonzero) digits is 90000, while the sum is 37.

It can be divided in two parts, 12655 and 304551, that added together give a triangular number (317206 = T₇₉₆).

The spelling of 12655304551 in words is "twelve billion, six hundred fifty-five million, three hundred four thousand, five hundred fifty-one".