12155027655 has 16 divisors (see below), whose sum is σ = 19525532544. Its totient is φ = 6456852000.

The previous prime is 12155027653. The next prime is 12155027663. The reversal of 12155027655 is 55672055121.

12155027655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12155027655 - 2¹ = 12155027653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155027653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1610449 + ... + 1617978.

It is an arithmetic number, because the mean of its divisors is an integer number (1220345784).

Almost surely, 2^12155027655 is an apocalyptic number.

12155027655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12155027655 is a deficient number, since it is larger than the sum of its proper divisors (7370504889).

12155027655 is a wasteful number, since it uses less digits than its factorization.

12155027655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3228686.

The product of its (nonzero) digits is 105000, while the sum is 39.

The spelling of 12155027655 in words is "twelve billion, one hundred fifty-five million, twenty-seven thousand, six hundred fifty-five".