18808511184155 has 16 divisors (see below), whose sum is σ = 28139486863104. Its totient is φ = 11724786192480.

The previous prime is 18808511184139. The next prime is 18808511184173. The reversal of 18808511184155 is 55148111580881.

It is not a de Polignac number, because 18808511184155 - 2⁴ = 18808511184139 is a prime.

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 18808511184155.

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, 24426637517 + ... + 24426638286.

It is an arithmetic number, because the mean of its divisors is an integer number (1758717928944).

Almost surely, 2^{18808511184155} is an apocalyptic number.

18808511184155 is a deficient number, since it is larger than the sum of its proper divisors (9330975678949).

18808511184155 is a wasteful number, since it uses less digits than its factorization.

18808511184155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48853275826.

The product of its (nonzero) digits is 2048000, while the sum is 56.

The spelling of 18808511184155 in words is "eighteen trillion, eight hundred eight billion, five hundred eleven million, one hundred eighty-four thousand, one hundred fifty-five".