18105628655 has 16 divisors (see below), whose sum is σ = 22734994464. Its totient is φ = 13827116160.

The previous prime is 18105628603. The next prime is 18105628699. The reversal of 18105628655 is 55682650181.

It is not a de Polignac number, because 18105628655 - 2³⁰ = 17031886831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 913481 + ... + 933090.

It is an arithmetic number, because the mean of its divisors is an integer number (1420937154).

Almost surely, 2^18105628655 is an apocalyptic number.

18105628655 is a deficient number, since it is larger than the sum of its proper divisors (4629365809).

18105628655 is a wasteful number, since it uses less digits than its factorization.

18105628655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846666.

The product of its (nonzero) digits is 576000, while the sum is 47.

The spelling of 18105628655 in words is "eighteen billion, one hundred five million, six hundred twenty-eight thousand, six hundred fifty-five".